611372401 has 2 divisors, whose sum is σ = 611372402. Its totient is φ = 611372400.

The previous prime is 611372393. The next prime is 611372429. The reversal of 611372401 is 104273116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415344400 + 196028001 = 20380^2 + 14001^2 .

It is a cyclic number.

It is not a de Polignac number, because 611372401 - 2³ = 611372393 is a prime.

It is not a weakly prime, because it can be changed into another prime (611372431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305686200 + 305686201.

It is an arithmetic number, because the mean of its divisors is an integer number (305686201).

Almost surely, 2^611372401 is an apocalyptic number.

It is an amenable number.

611372401 is a deficient number, since it is larger than the sum of its proper divisors (1).

611372401 is an equidigital number, since it uses as much as digits as its factorization.

611372401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 611372401 is about 24725.9459070831. The cubic root of 611372401 is about 848.7281560370.

The spelling of 611372401 in words is "six hundred eleven million, three hundred seventy-two thousand, four hundred one".