121615764 has 24 divisors (see below), whose sum is σ = 283953600. Its totient is φ = 40512384.

The previous prime is 121615733. The next prime is 121615771. The reversal of 121615764 is 467516121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28012 + ... + 32060.

It is an arithmetic number, because the mean of its divisors is an integer number (11831400).

Almost surely, 2^121615764 is an apocalyptic number.

It is an amenable number.

121615764 is an abundant number, since it is smaller than the sum of its proper divisors (162337836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121615764 is a wasteful number, since it uses less digits than its factorization.

121615764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6559 (or 6557 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 121615764 is about 11027.9537539836. The cubic root of 121615764 is about 495.4463395855.

The spelling of 121615764 in words is "one hundred twenty-one million, six hundred fifteen thousand, seven hundred sixty-four".