70508897 has 4 divisors (see below), whose sum is σ = 70531776. Its totient is φ = 70486020.

The previous prime is 70508891. The next prime is 70508917. The reversal of 70508897 is 79880507.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79880507 = 7 ⋅11411501.

It is a cyclic number.

It is not a de Polignac number, because 70508897 - 2⁶ = 70508833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70508891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5933 + ... + 13274.

It is an arithmetic number, because the mean of its divisors is an integer number (17632944).

Almost surely, 2^70508897 is an apocalyptic number.

It is an amenable number.

70508897 is a deficient number, since it is larger than the sum of its proper divisors (22879).

70508897 is a wasteful number, since it uses less digits than its factorization.

70508897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22878.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 70508897 is about 8396.9576037991. The cubic root of 70508897 is about 413.1248384108.

The spelling of 70508897 in words is "seventy million, five hundred eight thousand, eight hundred ninety-seven".