45646637 has 2 divisors, whose sum is σ = 45646638. Its totient is φ = 45646636.

The previous prime is 45646591. The next prime is 45646639. The reversal of 45646637 is 73664654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43744996 + 1901641 = 6614^2 + 1379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45646637 is a prime.

Together with 45646639, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45646594 and 45646603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45646639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22823318 + 22823319.

It is an arithmetic number, because the mean of its divisors is an integer number (22823319).

Almost surely, 2^45646637 is an apocalyptic number.

It is an amenable number.

45646637 is a deficient number, since it is larger than the sum of its proper divisors (1).

45646637 is an equidigital number, since it uses as much as digits as its factorization.

45646637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 41.

The square root of 45646637 is about 6756.2294958061. The cubic root of 45646637 is about 357.3849519771.

The spelling of 45646637 in words is "forty-five million, six hundred forty-six thousand, six hundred thirty-seven".