400620624626 has 8 divisors (see below), whose sum is σ = 609162867804. Its totient is φ = 197566335360.

The previous prime is 400620624623. The next prime is 400620624629. The reversal of 400620624626 is 626426026004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400620624623) and next prime (400620624629).

It can be written as a sum of positive squares in 2 ways, for example, as 335212050625 + 65408574001 = 578975^2 + 255751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400620624626.

It is not an unprimeable number, because it can be changed into a prime (400620624623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371988295 + ... + 1371988586.

Almost surely, 2^400620624626 is an apocalyptic number.

400620624626 is a deficient number, since it is larger than the sum of its proper divisors (208542243178).

400620624626 is a wasteful number, since it uses less digits than its factorization.

400620624626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743976956.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 400620624626 in words is "four hundred billion, six hundred twenty million, six hundred twenty-four thousand, six hundred twenty-six".