69949656 has 120 divisors (see below), whose sum is σ = 228014820. Its totient is φ = 19976544.

The previous prime is 69949651. The next prime is 69949667. The reversal of 69949656 is 65694996.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69949651) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 30651 + ... + 32853.

Almost surely, 2^69949656 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 69949656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114007410).

69949656 is an abundant number, since it is smaller than the sum of its proper divisors (158065164).

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

69949656 is a wasteful number, since it uses less digits than its factorization.

69949656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235 (or 2215 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 69949656 is about 8363.5910947391. The cubic root of 69949656 is about 412.0297053393.

The spelling of 69949656 in words is "sixty-nine million, nine hundred forty-nine thousand, six hundred fifty-six".