70618817 has 2 divisors, whose sum is σ = 70618818. Its totient is φ = 70618816.

The previous prime is 70618759. The next prime is 70618841. The reversal of 70618817 is 71881607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 2572816 = 8249^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 70618817 - 2¹² = 70614721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70617817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35309408 + 35309409.

It is an arithmetic number, because the mean of its divisors is an integer number (35309409).

Almost surely, 2^70618817 is an apocalyptic number.

It is an amenable number.

70618817 is a deficient number, since it is larger than the sum of its proper divisors (1).

70618817 is an equidigital number, since it uses as much as digits as its factorization.

70618817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 70618817 is about 8403.5002826203. The cubic root of 70618817 is about 413.3394075735.

The spelling of 70618817 in words is "seventy million, six hundred eighteen thousand, eight hundred seventeen".