626145066 has 20 divisors (see below), whose sum is σ = 1403029122. Its totient is φ = 208714968.

The previous prime is 626145049. The next prime is 626145101. The reversal of 626145066 is 660541626.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 369216225 + 256928841 = 19215^2 + 16029^2 .

It is a super-2 number, since 2×626145066² = 784115287352288712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 626145066.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1932385 + ... + 1932708.

Almost surely, 2^626145066 is an apocalyptic number.

626145066 is an abundant number, since it is smaller than the sum of its proper divisors (776884056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

626145066 is a wasteful number, since it uses less digits than its factorization.

626145066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865107 (or 3865098 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 626145066 is about 25022.8908401887. The cubic root of 626145066 is about 855.5097975403.

The spelling of 626145066 in words is "six hundred twenty-six million, one hundred forty-five thousand, sixty-six".