69899956 has 48 divisors (see below), whose sum is σ = 145129600. Its totient is φ = 28833408.

The previous prime is 69899953. The next prime is 69899959. The reversal of 69899956 is 65999896.

It is an interprime number because it is at equal distance from previous prime (69899953) and next prime (69899959).

It is a junction number, because it is equal to n+sod(n) for n = 69899894 and 69899903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69899953) 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, 112615 + ... + 113233.

Almost surely, 2^69899956 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 69899956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72564800).

69899956 is an abundant number, since it is smaller than the sum of its proper divisors (75229644).

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

69899956 is a wasteful number, since it uses less digits than its factorization.

69899956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 774 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 61.

The square root of 69899956 is about 8360.6193550478. The cubic root of 69899956 is about 411.9320983394.

The spelling of 69899956 in words is "sixty-nine million, eight hundred ninety-nine thousand, nine hundred fifty-six".