396766562 has 4 divisors (see below), whose sum is σ = 595149846. Its totient is φ = 198383280.

The previous prime is 396766541. The next prime is 396766571. The reversal of 396766562 is 265667693.

It is a Cunningham number, because it is equal to 19919²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 396766561 + 1 = 19919^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 396766562.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99191639 + ... + 99191642.

Almost surely, 2^396766562 is an apocalyptic number.

396766562 is a deficient number, since it is larger than the sum of its proper divisors (198383284).

396766562 is a wasteful number, since it uses less digits than its factorization.

396766562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198383283.

The product of its digits is 2449440, while the sum is 50.

The square root of 396766562 is about 19919.0000251017. Note that the first 4 decimals coincide. The cubic root of 396766562 is about 734.8155780838.

The spelling of 396766562 in words is "three hundred ninety-six million, seven hundred sixty-six thousand, five hundred sixty-two".