70670931 has 16 divisors (see below), whose sum is σ = 95725056. Its totient is φ = 46370016.

The previous prime is 70670903. The next prime is 70670947. The reversal of 70670931 is 13907607.

It is not a de Polignac number, because 70670931 - 2²¹ = 68573779 is a prime.

It is a super-2 number, since 2×70670931² = 9988760976813522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70670892 and 70670901.

It is not an unprimeable number, because it can be changed into a prime (70674931) 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, 114981 + ... + 115593.

It is an arithmetic number, because the mean of its divisors is an integer number (5982816).

Almost surely, 2^70670931 is an apocalyptic number.

70670931 is a deficient number, since it is larger than the sum of its proper divisors (25054125).

70670931 is a wasteful number, since it uses less digits than its factorization.

70670931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 70670931 is about 8406.6004425094. The cubic root of 70670931 is about 413.4410588246.

The spelling of 70670931 in words is "seventy million, six hundred seventy thousand, nine hundred thirty-one".