345626641 has 2 divisors, whose sum is σ = 345626642. Its totient is φ = 345626640.

The previous prime is 345626627. The next prime is 345626713. The reversal of 345626641 is 146626543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326886400 + 18740241 = 18080^2 + 4329^2 .

It is a cyclic number.

It is not a de Polignac number, because 345626641 - 2¹⁷ = 345495569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345626641.

It is not a weakly prime, because it can be changed into another prime (345620641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172813320 + 172813321.

It is an arithmetic number, because the mean of its divisors is an integer number (172813321).

Almost surely, 2^345626641 is an apocalyptic number.

It is an amenable number.

345626641 is a deficient number, since it is larger than the sum of its proper divisors (1).

345626641 is an equidigital number, since it uses as much as digits as its factorization.

345626641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 345626641 is about 18591.0365768023. The cubic root of 345626641 is about 701.7822888273.

The spelling of 345626641 in words is "three hundred forty-five million, six hundred twenty-six thousand, six hundred forty-one".