70160981 has 4 divisors (see below), whose sum is σ = 76539264. Its totient is φ = 63782700.

The previous prime is 70160969. The next prime is 70160983. The reversal of 70160981 is 18906107.

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.

It is a cyclic number.

It is not a de Polignac number, because 70160981 - 2¹⁴ = 70144597 is a prime.

It is a super-2 number, since 2×70160981² = 9845126509764722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70160983) 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, 3189125 + ... + 3189146.

It is an arithmetic number, because the mean of its divisors is an integer number (19134816).

Almost surely, 2^70160981 is an apocalyptic number.

It is an amenable number.

70160981 is a deficient number, since it is larger than the sum of its proper divisors (6378283).

70160981 is a wasteful number, since it uses less digits than its factorization.

70160981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378282.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 70160981 is about 8376.2151954209. The cubic root of 70160981 is about 412.4442160255. Note that the first 3 decimals are identical.

It can be divided in two parts, 70 and 160981, that added together give a 5-th power (161051 = 11⁵).

The spelling of 70160981 in words is "seventy million, one hundred sixty thousand, nine hundred eighty-one".