626049997 has 2 divisors, whose sum is σ = 626049998. Its totient is φ = 626049996.

The previous prime is 626049989. The next prime is 626050001. The reversal of 626049997 is 799940626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410224516 + 215825481 = 20254^2 + 14691^2 .

It is a cyclic number.

It is not a de Polignac number, because 626049997 - 2³ = 626049989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626019997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313024998 + 313024999.

It is an arithmetic number, because the mean of its divisors is an integer number (313024999).

Almost surely, 2^626049997 is an apocalyptic number.

It is an amenable number.

626049997 is a deficient number, since it is larger than the sum of its proper divisors (1).

626049997 is an equidigital number, since it uses as much as digits as its factorization.

626049997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 626049997 is about 25020.9911274514. The cubic root of 626049997 is about 855.4664973627.

The spelling of 626049997 in words is "six hundred twenty-six million, forty-nine thousand, nine hundred ninety-seven".