70857418 has 4 divisors (see below), whose sum is σ = 106286130. Its totient is φ = 35428708.

The previous prime is 70857401. The next prime is 70857473. The reversal of 70857418 is 81475807.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 70610409 + 247009 = 8403^2 + 497^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17714353 + ... + 17714356.

Almost surely, 2^70857418 is an apocalyptic number.

70857418 is a deficient number, since it is larger than the sum of its proper divisors (35428712).

70857418 is a wasteful number, since it uses less digits than its factorization.

70857418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35428711.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 70857418 is about 8417.6848361055. The cubic root of 70857418 is about 413.8044032356.

The spelling of 70857418 in words is "seventy million, eight hundred fifty-seven thousand, four hundred eighteen".