655402079 has 2 divisors, whose sum is σ = 655402080. Its totient is φ = 655402078.

The previous prime is 655402063. The next prime is 655402133. The reversal of 655402079 is 970204556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655402079 - 2⁴ = 655402063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655402679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327701039 + 327701040.

It is an arithmetic number, because the mean of its divisors is an integer number (327701040).

Almost surely, 2^655402079 is an apocalyptic number.

655402079 is a deficient number, since it is larger than the sum of its proper divisors (1).

655402079 is an equidigital number, since it uses as much as digits as its factorization.

655402079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 655402079 is about 25600.8218422769. The cubic root of 655402079 is about 868.6322274039.

The spelling of 655402079 in words is "six hundred fifty-five million, four hundred two thousand, seventy-nine".