655672013 has 2 divisors, whose sum is σ = 655672014. Its totient is φ = 655672012.

The previous prime is 655672001. The next prime is 655672033. The reversal of 655672013 is 310276556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655513609 + 158404 = 25603^2 + 398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655672013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655672033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327836006 + 327836007.

It is an arithmetic number, because the mean of its divisors is an integer number (327836007).

Almost surely, 2^655672013 is an apocalyptic number.

It is an amenable number.

655672013 is a deficient number, since it is larger than the sum of its proper divisors (1).

655672013 is an equidigital number, since it uses as much as digits as its factorization.

655672013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 655672013 is about 25606.0932787491. The cubic root of 655672013 is about 868.7514627031.

The spelling of 655672013 in words is "six hundred fifty-five million, six hundred seventy-two thousand, thirteen".