69940464 has 80 divisors (see below), whose sum is σ = 203510784. Its totient is φ = 20505600.

The previous prime is 69940457. The next prime is 69940469. The reversal of 69940464 is 46404996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69940469) 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, 14232 + ... + 18504.

Almost surely, 2^69940464 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 69940464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101755392).

69940464 is an abundant number, since it is smaller than the sum of its proper divisors (133570320).

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

69940464 is a wasteful number, since it uses less digits than its factorization.

69940464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326 (or 4320 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 69940464 is about 8363.0415519714. The cubic root of 69940464 is about 412.0116564396.

The spelling of 69940464 in words is "sixty-nine million, nine hundred forty thousand, four hundred sixty-four".