69720516 has 36 divisors (see below), whose sum is σ = 176800624. Its totient is φ = 23166000.

The previous prime is 69720503. The next prime is 69720523. The reversal of 69720516 is 61502796.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8991 + ... + 14841.

Almost surely, 2^69720516 is an apocalyptic number.

It is an amenable number.

69720516 is an abundant number, since it is smaller than the sum of its proper divisors (107080108).

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

69720516 is a wasteful number, since it uses less digits than its factorization.

69720516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192 (or 6187 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 69720516 is about 8349.8811967596. The cubic root of 69720516 is about 411.5793063344.

The spelling of 69720516 in words is "sixty-nine million, seven hundred twenty thousand, five hundred sixteen".