653253977 has 2 divisors, whose sum is σ = 653253978. Its totient is φ = 653253976.

The previous prime is 653253947. The next prime is 653253983. The reversal of 653253977 is 779352356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610534681 + 42719296 = 24709^2 + 6536^2 .

It is a cyclic number.

It is not a de Polignac number, because 653253977 - 2²⁴ = 636476761 is a prime.

It is not a weakly prime, because it can be changed into another prime (653253947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326626988 + 326626989.

It is an arithmetic number, because the mean of its divisors is an integer number (326626989).

Almost surely, 2^653253977 is an apocalyptic number.

It is an amenable number.

653253977 is a deficient number, since it is larger than the sum of its proper divisors (1).

653253977 is an equidigital number, since it uses as much as digits as its factorization.

653253977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1190700, while the sum is 47.

The square root of 653253977 is about 25558.8336392724. The cubic root of 653253977 is about 867.6821984406.

The spelling of 653253977 in words is "six hundred fifty-three million, two hundred fifty-three thousand, nine hundred seventy-seven".