1670716840 has 64 divisors (see below), whose sum is σ = 4142476800. Its totient is φ = 602525952.

The previous prime is 1670716823. The next prime is 1670716841. The reversal of 1670716840 is 486170761.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1670716793 and 1670716802.

It is not an unprimeable number, because it can be changed into a prime (1670716841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15000 + ... + 59719.

It is an arithmetic number, because the mean of its divisors is an integer number (64726200).

Almost surely, 2^1670716840 is an apocalyptic number.

1670716840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670716840 is an abundant number, since it is smaller than the sum of its proper divisors (2471759960).

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

1670716840 is a wasteful number, since it uses less digits than its factorization.

1670716840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74786 (or 74782 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1670716840 is about 40874.4032372339. The cubic root of 1670716840 is about 1186.5907268802.

The spelling of 1670716840 in words is "one billion, six hundred seventy million, seven hundred sixteen thousand, eight hundred forty".