121753664 has 28 divisors (see below), whose sum is σ = 242881404. Its totient is φ = 60555264.

The previous prime is 121753649. The next prime is 121753669. The reversal of 121753664 is 466357121.

It can be written as a sum of positive squares in 2 ways, for example, as 36966400 + 84787264 = 6080^2 + 9208^2 .

It is not an unprimeable number, because it can be changed into a prime (121753669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7424 + ... + 17280.

Almost surely, 2^121753664 is an apocalyptic number.

It is an amenable number.

121753664 is a deficient number, since it is larger than the sum of its proper divisors (121127740).

121753664 is an equidigital number, since it uses as much as digits as its factorization.

121753664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062 (or 10052 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 121753664 is about 11034.2042757962. The cubic root of 121753664 is about 495.6335308969.

The spelling of 121753664 in words is "one hundred twenty-one million, seven hundred fifty-three thousand, six hundred sixty-four".