69640396 has 48 divisors (see below), whose sum is σ = 148556800. Its totient is φ = 27900288.

The previous prime is 69640393. The next prime is 69640399. The reversal of 69640396 is 69304696.

It is an interprime number because it is at equal distance from previous prime (69640393) and next prime (69640399).

It is not an unprimeable number, because it can be changed into a prime (69640393) 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, 41200 + ... + 42856.

Almost surely, 2^69640396 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 69640396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74278400).

69640396 is an abundant number, since it is smaller than the sum of its proper divisors (78916404).

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

69640396 is a wasteful number, since it uses less digits than its factorization.

69640396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 69640396 is about 8345.0821445927. The cubic root of 69640396 is about 411.4215891351.

The spelling of 69640396 in words is "sixty-nine million, six hundred forty thousand, three hundred ninety-six".