69628790 has 64 divisors (see below), whose sum is σ = 161353728. Its totient is φ = 20995200.

The previous prime is 69628789. The next prime is 69628799. The reversal of 69628790 is 9782696.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69628799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22412 + ... + 25328.

It is an arithmetic number, because the mean of its divisors is an integer number (2521152).

Almost surely, 2^69628790 is an apocalyptic number.

69628790 is an abundant number, since it is smaller than the sum of its proper divisors (91724938).

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

69628790 is a wasteful number, since it uses less digits than its factorization.

69628790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 69628790 is about 8344.3867360040. The cubic root of 69628790 is about 411.3987325532.

The spelling of 69628790 in words is "sixty-nine million, six hundred twenty-eight thousand, seven hundred ninety".