70989331 has 16 divisors (see below), whose sum is σ = 87367680. Its totient is φ = 56292480.

The previous prime is 70989307. The next prime is 70989341. The reversal of 70989331 is 13398907.

It is a cyclic number.

It is not a de Polignac number, because 70989331 - 2⁷ = 70989203 is a prime.

It is a super-2 number, since 2×70989331² = 10078970231655122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70989341) 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, 1966 + ... + 12076.

It is an arithmetic number, because the mean of its divisors is an integer number (5460480).

Almost surely, 2^70989331 is an apocalyptic number.

70989331 is a deficient number, since it is larger than the sum of its proper divisors (16378349).

70989331 is a wasteful number, since it uses less digits than its factorization.

70989331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10194.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 70989331 is about 8425.5166607158. The cubic root of 70989331 is about 414.0610328777.

The spelling of 70989331 in words is "seventy million, nine hundred eighty-nine thousand, three hundred thirty-one".