69638970 has 32 divisors (see below), whose sum is σ = 176966208. Its totient is φ = 17477888.

The previous prime is 69638941. The next prime is 69638977. The reversal of 69638970 is 7983696.

It is a happy number.

It is a super-2 number, since 2×69638970² = 9699172285321800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (69638977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67764 + ... + 68783.

It is an arithmetic number, because the mean of its divisors is an integer number (5530194).

Almost surely, 2^69638970 is an apocalyptic number.

69638970 is an abundant number, since it is smaller than the sum of its proper divisors (107327238).

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

69638970 is a wasteful number, since it uses less digits than its factorization.

69638970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136574.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 69638970 is about 8344.9967046129. The cubic root of 69638970 is about 411.4187809412.

The spelling of 69638970 in words is "sixty-nine million, six hundred thirty-eight thousand, nine hundred seventy".