397616683 has 2 divisors, whose sum is σ = 397616684. Its totient is φ = 397616682.

The previous prime is 397616671. The next prime is 397616707. The reversal of 397616683 is 386616793.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397616683 is a prime.

It is not a weakly prime, because it can be changed into another prime (397616623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198808341 + 198808342.

It is an arithmetic number, because the mean of its divisors is an integer number (198808342).

Almost surely, 2^397616683 is an apocalyptic number.

397616683 is a deficient number, since it is larger than the sum of its proper divisors (1).

397616683 is an equidigital number, since it uses as much as digits as its factorization.

397616683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 397616683 is about 19940.3280564789. The cubic root of 397616683 is about 735.3400145254.

The spelling of 397616683 in words is "three hundred ninety-seven million, six hundred sixteen thousand, six hundred eighty-three".