70990164 has 144 divisors (see below), whose sum is σ = 221090688. Its totient is φ = 18745344.

The previous prime is 70990159. The next prime is 70990189. The reversal of 70990164 is 46109907.

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

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 312619 + ... + 312845.

It is an arithmetic number, because the mean of its divisors is an integer number (1535352).

Almost surely, 2^70990164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70990164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110545344).

70990164 is an abundant number, since it is smaller than the sum of its proper divisors (150100524).

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

70990164 is a wasteful number, since it uses less digits than its factorization.

70990164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 70990164 is about 8425.5660937411. The cubic root of 70990164 is about 414.0626524238.

The spelling of 70990164 in words is "seventy million, nine hundred ninety thousand, one hundred sixty-four".