626264641 has 4 divisors (see below), whose sum is σ = 626455984. Its totient is φ = 626073300.

The previous prime is 626264629. The next prime is 626264651. The reversal of 626264641 is 146462626.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146462626 = 2 ⋅73231313.

It is a cyclic number.

It is not a de Polignac number, because 626264641 - 2¹⁷ = 626133569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 626264641.

It is not an unprimeable number, because it can be changed into a prime (626264651) 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, 90675 + ... + 97336.

It is an arithmetic number, because the mean of its divisors is an integer number (156613996).

Almost surely, 2^626264641 is an apocalyptic number.

It is an amenable number.

626264641 is a deficient number, since it is larger than the sum of its proper divisors (191343).

626264641 is a wasteful number, since it uses less digits than its factorization.

626264641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191342.

The product of its digits is 82944, while the sum is 37.

The square root of 626264641 is about 25025.2800383932. The cubic root of 626264641 is about 855.5642530109.

The spelling of 626264641 in words is "six hundred twenty-six million, two hundred sixty-four thousand, six hundred forty-one".