396556 has 6 divisors (see below), whose sum is σ = 693980. Its totient is φ = 198276.

The previous prime is 396547. The next prime is 396563. The reversal of 396556 is 655693.

It is a super-2 number, since 2×396556² = 314513322272, which contains 22 as substring.

It is an unprimeable number.

396556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49566 + ... + 49573.

2³⁹⁶⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

396556 is a deficient number, since it is larger than the sum of its proper divisors (297424).

396556 is a wasteful number, since it uses less digits than its factorization.

396556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99143 (or 99141 counting only the distinct ones).

The product of its digits is 24300, while the sum is 34.

The square root of 396556 is about 629.7269249445. The cubic root of 396556 is about 73.4685567450.

The spelling of 396556 in words is "three hundred ninety-six thousand, five hundred fifty-six".