345537677 has 2 divisors, whose sum is σ = 345537678. Its totient is φ = 345537676.

The previous prime is 345537659. The next prime is 345537683. The reversal of 345537677 is 776735543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190136521 + 155401156 = 13789^2 + 12466^2 .

It is a cyclic number.

It is not a de Polignac number, because 345537677 - 2¹² = 345533581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345537277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172768838 + 172768839.

It is an arithmetic number, because the mean of its divisors is an integer number (172768839).

Almost surely, 2^345537677 is an apocalyptic number.

It is an amenable number.

345537677 is a deficient number, since it is larger than the sum of its proper divisors (1).

345537677 is an equidigital number, since it uses as much as digits as its factorization.

345537677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1852200, while the sum is 47.

The square root of 345537677 is about 18588.6437644063. The cubic root of 345537677 is about 701.7220709413.

The spelling of 345537677 in words is "three hundred forty-five million, five hundred thirty-seven thousand, six hundred seventy-seven".