121624657 has 8 divisors (see below), whose sum is σ = 151636032. Its totient is φ = 94772400.

The previous prime is 121624651. The next prime is 121624663. The reversal of 121624657 is 756426121.

It is an interprime number because it is at equal distance from previous prime (121624651) and next prime (121624663).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121624657 - 2³ = 121624649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121624651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789694 + ... + 789847.

It is an arithmetic number, because the mean of its divisors is an integer number (18954504).

Almost surely, 2^121624657 is an apocalyptic number.

It is an amenable number.

121624657 is a deficient number, since it is larger than the sum of its proper divisors (30011375).

121624657 is a wasteful number, since it uses less digits than its factorization.

121624657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579559.

The product of its digits is 20160, while the sum is 34.

The square root of 121624657 is about 11028.3569492468. The cubic root of 121624657 is about 495.4584155883.

The spelling of 121624657 in words is "one hundred twenty-one million, six hundred twenty-four thousand, six hundred fifty-seven".