647504051 has 2 divisors, whose sum is σ = 647504052. Its totient is φ = 647504050.

The previous prime is 647504029. The next prime is 647504063. The reversal of 647504051 is 150405746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647504051 - 2¹⁰ = 647503027 is a prime.

It is a super-2 number, since 2×647504051² = 838522992122821202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 647503999 and 647504017.

It is not a weakly prime, because it can be changed into another prime (647504071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323752025 + 323752026.

It is an arithmetic number, because the mean of its divisors is an integer number (323752026).

Almost surely, 2^647504051 is an apocalyptic number.

647504051 is a deficient number, since it is larger than the sum of its proper divisors (1).

647504051 is an equidigital number, since it uses as much as digits as its factorization.

647504051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 647504051 is about 25446.1008997449. The cubic root of 647504051 is about 865.1289197181.

Adding to 647504051 its reverse (150405746), we get a palindrome (797909797).

The spelling of 647504051 in words is "six hundred forty-seven million, five hundred four thousand, fifty-one".