396637 has 2 divisors, whose sum is σ = 396638. Its totient is φ = 396636.

The previous prime is 396631. The next prime is 396647. The reversal of 396637 is 736693.

396637 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391876 + 4761 = 626^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 396637 - 2³ = 396629 is a prime.

396637 is an undulating number in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198318 + 198319.

It is an arithmetic number, because the mean of its divisors is an integer number (198319).

2³⁹⁶⁶³⁷ is an apocalyptic number.

It is an amenable number.

396637 is a deficient number, since it is larger than the sum of its proper divisors (1).

396637 is an equidigital number, since it uses as much as digits as its factorization.

396637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 34.

The square root of 396637 is about 629.7912352518. The cubic root of 396637 is about 73.4735586010.

It can be divided in two parts, 396 and 637, that multiplied together give a palindrome (252252).

The spelling of 396637 in words is "three hundred ninety-six thousand, six hundred thirty-seven".