70424657 has 2 divisors, whose sum is σ = 70424658. Its totient is φ = 70424656.

The previous prime is 70424623. The next prime is 70424663. The reversal of 70424657 is 75642407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 26122321 = 6656^2 + 5111^2 .

It is an emirp because it is prime and its reverse (75642407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70424657 - 2²⁴ = 53647441 is a prime.

It is not a weakly prime, because it can be changed into another prime (70424617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35212328 + 35212329.

It is an arithmetic number, because the mean of its divisors is an integer number (35212329).

Almost surely, 2^70424657 is an apocalyptic number.

It is an amenable number.

70424657 is a deficient number, since it is larger than the sum of its proper divisors (1).

70424657 is an equidigital number, since it uses as much as digits as its factorization.

70424657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 70424657 is about 8391.9400021687. The cubic root of 70424657 is about 412.9602468640.

The spelling of 70424657 in words is "seventy million, four hundred twenty-four thousand, six hundred fifty-seven".