70716557 has 4 divisors (see below), whose sum is σ = 71772096. Its totient is φ = 69661020.

The previous prime is 70716493. The next prime is 70716563. The reversal of 70716557 is 75561707.

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 70716557 - 2⁶ = 70716493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70716557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70710557) 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, 527669 + ... + 527802.

It is an arithmetic number, because the mean of its divisors is an integer number (17943024).

Almost surely, 2^70716557 is an apocalyptic number.

It is an amenable number.

70716557 is a deficient number, since it is larger than the sum of its proper divisors (1055539).

70716557 is a wasteful number, since it uses less digits than its factorization.

70716557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055538.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 70716557 is about 8409.3137056480. The cubic root of 70716557 is about 413.5300138513.

The spelling of 70716557 in words is "seventy million, seven hundred sixteen thousand, five hundred fifty-seven".