612623651 has 2 divisors, whose sum is σ = 612623652. Its totient is φ = 612623650.

The previous prime is 612623639. The next prime is 612623659. The reversal of 612623651 is 156326216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612623651 - 2¹⁴ = 612607267 is a prime.

It is not a weakly prime, because it can be changed into another prime (612623659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306311825 + 306311826.

It is an arithmetic number, because the mean of its divisors is an integer number (306311826).

Almost surely, 2^612623651 is an apocalyptic number.

612623651 is a deficient number, since it is larger than the sum of its proper divisors (1).

612623651 is an equidigital number, since it uses as much as digits as its factorization.

612623651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 612623651 is about 24751.2353429076. The cubic root of 612623651 is about 849.3067708827.

Adding to 612623651 its reverse (156326216), we get a palindrome (768949867).

The spelling of 612623651 in words is "six hundred twelve million, six hundred twenty-three thousand, six hundred fifty-one".