69990045 has 32 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 36478464.

The previous prime is 69990031. The next prime is 69990049. The reversal of 69990045 is 54009996.

It is a happy number.

It is not a de Polignac number, because 69990045 - 2⁴ = 69990029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69989979 and 69990006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69990049) 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, 137251 + ... + 137759.

It is an arithmetic number, because the mean of its divisors is an integer number (3580200).

Almost surely, 2^69990045 is an apocalyptic number.

It is an amenable number.

69990045 is a deficient number, since it is larger than the sum of its proper divisors (44576355).

69990045 is a wasteful number, since it uses less digits than its factorization.

69990045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 69990045 is about 8366.0053191472. The cubic root of 69990045 is about 412.1089921998.

The spelling of 69990045 in words is "sixty-nine million, nine hundred ninety thousand, forty-five".