70909164 has 18 divisors (see below), whose sum is σ = 179242700. Its totient is φ = 23636376.

The previous prime is 70909151. The next prime is 70909169. The reversal of 70909164 is 46190907.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1969699 = 70909164 / (7 + 0 + 9 + 0 + 9 + 1 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (70909169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 984814 + ... + 984885.

Almost surely, 2^70909164 is an apocalyptic number.

It is an amenable number.

70909164 is an abundant number, since it is smaller than the sum of its proper divisors (108333536).

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

70909164 is a wasteful number, since it uses less digits than its factorization.

70909164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969709 (or 1969704 counting only the distinct ones).

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

The square root of 70909164 is about 8420.7579231326. The cubic root of 70909164 is about 413.9051102278.

The spelling of 70909164 in words is "seventy million, nine hundred nine thousand, one hundred sixty-four".