70905057 has 8 divisors (see below), whose sum is σ = 94634400. Its totient is φ = 47222880.

The previous prime is 70905047. The next prime is 70905071. The reversal of 70905057 is 75050907.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70905057 - 2⁶ = 70904993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70905007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8119 + ... + 14412.

It is an arithmetic number, because the mean of its divisors is an integer number (11829300).

Almost surely, 2^70905057 is an apocalyptic number.

It is an amenable number.

70905057 is a deficient number, since it is larger than the sum of its proper divisors (23729343).

70905057 is a wasteful number, since it uses less digits than its factorization.

70905057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23583.

The product of its (nonzero) digits is 11025, while the sum is 33.

The square root of 70905057 is about 8420.5140579421. The cubic root of 70905057 is about 413.8971190599.

The spelling of 70905057 in words is "seventy million, nine hundred five thousand, fifty-seven".