70941657 has 4 divisors (see below), whose sum is σ = 94588880. Its totient is φ = 47294436.

The previous prime is 70941641. The next prime is 70941667. The reversal of 70941657 is 75614907.

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 not a de Polignac number, because 70941657 - 2⁴ = 70941641 is a prime.

It is a super-4 number, since 4×70941657⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70941667) 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, 11823607 + ... + 11823612.

It is an arithmetic number, because the mean of its divisors is an integer number (23647220).

Almost surely, 2^70941657 is an apocalyptic number.

It is an amenable number.

70941657 is a deficient number, since it is larger than the sum of its proper divisors (23647223).

70941657 is a wasteful number, since it uses less digits than its factorization.

70941657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23647222.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 70941657 is about 8422.6870415563. The cubic root of 70941657 is about 413.9683223913.

The spelling of 70941657 in words is "seventy million, nine hundred forty-one thousand, six hundred fifty-seven".