69640552 has 8 divisors (see below), whose sum is σ = 130576050. Its totient is φ = 34820272.

The previous prime is 69640531. The next prime is 69640553. The reversal of 69640552 is 25504696.

It can be written as a sum of positive squares in only one way, i.e., 54848836 + 14791716 = 7406^2 + 3846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (69640553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4352527 + ... + 4352542.

Almost surely, 2^69640552 is an apocalyptic number.

It is an amenable number.

69640552 is a deficient number, since it is larger than the sum of its proper divisors (60935498).

69640552 is a wasteful number, since it uses less digits than its factorization.

69640552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705075 (or 8705071 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 69640552 is about 8345.0914914098. The cubic root of 69640552 is about 411.4218963405.

The spelling of 69640552 in words is "sixty-nine million, six hundred forty thousand, five hundred fifty-two".