1712649645 has 96 divisors (see below), whose sum is σ = 3625390080. Its totient is φ = 730477440.

The previous prime is 1712649643. The next prime is 1712649661. The reversal of 1712649645 is 5469462171.

It is not a de Polignac number, because 1712649645 - 2¹ = 1712649643 is a prime.

It is a super-3 number, since 3×1712649645³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1712649645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1712649643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 398860 + ... + 403130.

It is an arithmetic number, because the mean of its divisors is an integer number (37764480).

Almost surely, 2^1712649645 is an apocalyptic number.

1712649645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1712649645 is an abundant number, since it is smaller than the sum of its proper divisors (1912740435).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1712649645 is a wasteful number, since it uses less digits than its factorization.

1712649645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375 (or 4372 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1712649645 is about 41384.1714306328. The cubic root of 1712649645 is about 1196.4361030940.

The spelling of 1712649645 in words is "one billion, seven hundred twelve million, six hundred forty-nine thousand, six hundred forty-five".