845701640 has 64 divisors (see below), whose sum is σ = 2225266560. Its totient is φ = 283207680.

The previous prime is 845701631. The next prime is 845701657. The reversal of 845701640 is 46107548.

It is a super-2 number, since 2×845701640² = 1430422527797379200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 845701640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23081 + ... + 47160.

It is an arithmetic number, because the mean of its divisors is an integer number (34769790).

Almost surely, 2^845701640 is an apocalyptic number.

It is an amenable number.

845701640 is an abundant number, since it is smaller than the sum of its proper divisors (1379564920).

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

845701640 is a wasteful number, since it uses less digits than its factorization.

845701640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70302 (or 70298 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 845701640 is about 29080.9497781623. The cubic root of 845701640 is about 945.6687930164.

The spelling of 845701640 in words is "eight hundred forty-five million, seven hundred one thousand, six hundred forty".