70972917 has 16 divisors (see below), whose sum is σ = 99145728. Its totient is φ = 45074480.

The previous prime is 70972903. The next prime is 70972931. The reversal of 70972917 is 71927907.

It is an interprime number because it is at equal distance from previous prime (70972903) and next prime (70972931).

It is not a de Polignac number, because 70972917 - 2⁴ = 70972901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70972997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16192 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (6196608).

Almost surely, 2^70972917 is an apocalyptic number.

It is an amenable number.

70972917 is a deficient number, since it is larger than the sum of its proper divisors (28172811).

70972917 is a wasteful number, since it uses less digits than its factorization.

70972917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200.

The product of its (nonzero) digits is 55566, while the sum is 42.

The square root of 70972917 is about 8424.5425395092. The cubic root of 70972917 is about 414.0291176514.

The spelling of 70972917 in words is "seventy million, nine hundred seventy-two thousand, nine hundred seventeen".