397608633 has 6 divisors (see below), whose sum is σ = 574323594. Its totient is φ = 265072416.

The previous prime is 397608599. The next prime is 397608637. The reversal of 397608633 is 336806793.

It is a happy number.

397608633 is a `hidden beast` number, since 3 + 9 + 7 + 6 + 0 + 8 + 633 = 666.

It can be written as a sum of positive squares in only one way, i.e., 320660649 + 76947984 = 17907^2 + 8772^2 .

It is not a de Polignac number, because 397608633 - 2²⁰ = 396560057 is a prime.

It is a super-2 number, since 2×397608633² = 316185250072257378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397608637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22089360 + ... + 22089377.

It is an arithmetic number, because the mean of its divisors is an integer number (95720599).

Almost surely, 2^397608633 is an apocalyptic number.

It is an amenable number.

397608633 is a deficient number, since it is larger than the sum of its proper divisors (176714961).

397608633 is a wasteful number, since it uses less digits than its factorization.

397608633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44178743 (or 44178740 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 397608633 is about 19940.1262032115. The cubic root of 397608633 is about 735.3350520181.

The spelling of 397608633 in words is "three hundred ninety-seven million, six hundred eight thousand, six hundred thirty-three".