401610637 has 2 divisors, whose sum is σ = 401610638. Its totient is φ = 401610636.

The previous prime is 401610569. The next prime is 401610661. The reversal of 401610637 is 736016104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381772521 + 19838116 = 19539^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 401610637 - 2¹⁹ = 401086349 is a prime.

It is a super-2 number, since 2×401610637² = 322582207503091538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401610667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200805318 + 200805319.

It is an arithmetic number, because the mean of its divisors is an integer number (200805319).

Almost surely, 2^401610637 is an apocalyptic number.

It is an amenable number.

401610637 is a deficient number, since it is larger than the sum of its proper divisors (1).

401610637 is an equidigital number, since it uses as much as digits as its factorization.

401610637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 401610637 is about 20040.2254727835. The cubic root of 401610637 is about 737.7939149107.

The spelling of 401610637 in words is "four hundred one million, six hundred ten thousand, six hundred thirty-seven".