69790040 has 64 divisors (see below), whose sum is σ = 166428000. Its totient is φ = 26265600.

The previous prime is 69790033. The next prime is 69790057. The reversal of 69790040 is 4009796.

It is a happy number.

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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173840 + ... + 174240.

Almost surely, 2^69790040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69790040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83214000).

69790040 is an abundant number, since it is smaller than the sum of its proper divisors (96637960).

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

69790040 is a wasteful number, since it uses less digits than its factorization.

69790040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 69790040 is about 8354.0433324229. The cubic root of 69790040 is about 411.7160672921.

The spelling of 69790040 in words is "sixty-nine million, seven hundred ninety thousand, forty".