400666622 has 4 divisors (see below), whose sum is σ = 600999936. Its totient is φ = 200333310.

The previous prime is 400666613. The next prime is 400666657. The reversal of 400666622 is 226666004.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100166654 + ... + 100166657.

It is an arithmetic number, because the mean of its divisors is an integer number (150249984).

Almost surely, 2^400666622 is an apocalyptic number.

400666622 is a deficient number, since it is larger than the sum of its proper divisors (200333314).

400666622 is a wasteful number, since it uses less digits than its factorization.

400666622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200333313.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 400666622 is about 20016.6586122659. The cubic root of 400666622 is about 737.2153819671.

The spelling of 400666622 in words is "four hundred million, six hundred sixty-six thousand, six hundred twenty-two".