471693645 has 64 divisors (see below), whose sum is σ = 906992640. Its totient is φ = 231681024.

The previous prime is 471693641. The next prime is 471693653. The reversal of 471693645 is 546396174.

It is not a de Polignac number, because 471693645 - 2² = 471693641 is a prime.

It is a super-3 number, since 3×471693645³ (a number of 27 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 471693645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471693641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 105679 + ... + 110051.

It is an arithmetic number, because the mean of its divisors is an integer number (14171760).

Almost surely, 2^471693645 is an apocalyptic number.

471693645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

471693645 is a deficient number, since it is larger than the sum of its proper divisors (435298995).

471693645 is a wasteful number, since it uses less digits than its factorization.

471693645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451 (or 4445 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 471693645 is about 21718.5092720472. The cubic root of 471693645 is about 778.4307948921.

The spelling of 471693645 in words is "four hundred seventy-one million, six hundred ninety-three thousand, six hundred forty-five".