45647690 has 32 divisors (see below), whose sum is σ = 94357440. Its totient is φ = 15724800.

The previous prime is 45647627. The next prime is 45647699. The reversal of 45647690 is 9674654.

It is a super-2 number, since 2×45647690² = 4167423204672200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45647699) 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, 8831 + ... + 13010.

It is an arithmetic number, because the mean of its divisors is an integer number (2948670).

Almost surely, 2^45647690 is an apocalyptic number.

45647690 is an abundant number, since it is smaller than the sum of its proper divisors (48709750).

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

45647690 is a wasteful number, since it uses less digits than its factorization.

45647690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21878.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 45647690 is about 6756.3074234377. The cubic root of 45647690 is about 357.3877000690.

The spelling of 45647690 in words is "forty-five million, six hundred forty-seven thousand, six hundred ninety".