646074707 has 2 divisors, whose sum is σ = 646074708. Its totient is φ = 646074706.

The previous prime is 646074703. The next prime is 646074713. The reversal of 646074707 is 707470646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 646074707 - 2² = 646074703 is a prime.

It is not a weakly prime, because it can be changed into another prime (646074701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323037353 + 323037354.

It is an arithmetic number, because the mean of its divisors is an integer number (323037354).

Almost surely, 2^646074707 is an apocalyptic number.

646074707 is a deficient number, since it is larger than the sum of its proper divisors (1).

646074707 is an equidigital number, since it uses as much as digits as its factorization.

646074707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 646074707 is about 25417.9996655913. Note that the first 3 decimals coincide. The cubic root of 646074707 is about 864.4918694737.

The spelling of 646074707 in words is "six hundred forty-six million, seventy-four thousand, seven hundred seven".