397607653 has 2 divisors, whose sum is σ = 397607654. Its totient is φ = 397607652.

The previous prime is 397607641. The next prime is 397607657. The reversal of 397607653 is 356706793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274796929 + 122810724 = 16577^2 + 11082^2 .

It is a cyclic number.

It is not a de Polignac number, because 397607653 - 2⁵ = 397607621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397607657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198803826 + 198803827.

It is an arithmetic number, because the mean of its divisors is an integer number (198803827).

Almost surely, 2^397607653 is an apocalyptic number.

It is an amenable number.

397607653 is a deficient number, since it is larger than the sum of its proper divisors (1).

397607653 is an equidigital number, since it uses as much as digits as its factorization.

397607653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 46.

The square root of 397607653 is about 19940.1016296307. The cubic root of 397607653 is about 735.3344478822.

The spelling of 397607653 in words is "three hundred ninety-seven million, six hundred seven thousand, six hundred fifty-three".