122631645 has 16 divisors (see below), whose sum is σ = 197030592. Its totient is φ = 65130240.

The previous prime is 122631631. The next prime is 122631671. The reversal of 122631645 is 546136221.

It is not a de Polignac number, because 122631645 - 2⁸ = 122631389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13347 + ... + 20576.

It is an arithmetic number, because the mean of its divisors is an integer number (12314412).

Almost surely, 2^122631645 is an apocalyptic number.

122631645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122631645 is a deficient number, since it is larger than the sum of its proper divisors (74398947).

122631645 is a wasteful number, since it uses less digits than its factorization.

122631645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34172.

The product of its digits is 8640, while the sum is 30.

The square root of 122631645 is about 11073.9173285699. The cubic root of 122631645 is about 496.8220372329.

Adding to 122631645 its reverse (546136221), we get a palindrome (668767866).

The spelling of 122631645 in words is "one hundred twenty-two million, six hundred thirty-one thousand, six hundred forty-five".