13764921 has 8 divisors (see below), whose sum is σ = 18456480. Its totient is φ = 9124992.

The previous prime is 13764913. The next prime is 13764923. The reversal of 13764921 is 12946731.

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

It is not a de Polignac number, because 13764921 - 2³ = 13764913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13764923) 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, 12280 + ... + 13353.

It is an arithmetic number, because the mean of its divisors is an integer number (2307060).

Almost surely, 2^13764921 is an apocalyptic number.

It is an amenable number.

13764921 is a deficient number, since it is larger than the sum of its proper divisors (4691559).

13764921 is a wasteful number, since it uses less digits than its factorization.

13764921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25815.

The product of its digits is 9072, while the sum is 33.

The square root of 13764921 is about 3710.1106452504. The cubic root of 13764921 is about 239.6576194359.

The spelling of 13764921 in words is "thirteen million, seven hundred sixty-four thousand, nine hundred twenty-one".