70725987 has 8 divisors (see below), whose sum is σ = 104779280. Its totient is φ = 47150640.

The previous prime is 70725971. The next prime is 70725997. The reversal of 70725987 is 78952707.

It is not a de Polignac number, because 70725987 - 2⁴ = 70725971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70725917) 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 7 ways as a sum of consecutive naturals, for example, 1309714 + ... + 1309767.

It is an arithmetic number, because the mean of its divisors is an integer number (13097410).

Almost surely, 2^70725987 is an apocalyptic number.

70725987 is a deficient number, since it is larger than the sum of its proper divisors (34053293).

70725987 is a wasteful number, since it uses less digits than its factorization.

70725987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619490 (or 2619484 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 70725987 is about 8409.8743748049. The cubic root of 70725987 is about 413.5483943404.

The spelling of 70725987 in words is "seventy million, seven hundred twenty-five thousand, nine hundred eighty-seven".