70724057 has 16 divisors (see below), whose sum is σ = 77680512. Its totient is φ = 64183680.

The previous prime is 70724041. The next prime is 70724081. The reversal of 70724057 is 75042707.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 70724057 - 2⁴ = 70724041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70724557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33878 + ... + 35904.

It is an arithmetic number, because the mean of its divisors is an integer number (4855032).

Almost surely, 2^70724057 is an apocalyptic number.

It is an amenable number.

70724057 is a deficient number, since it is larger than the sum of its proper divisors (6956455).

70724057 is a wasteful number, since it uses less digits than its factorization.

70724057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 70724057 is about 8409.7596279561. The cubic root of 70724057 is about 413.5446326129.

The spelling of 70724057 in words is "seventy million, seven hundred twenty-four thousand, fifty-seven".