72666049 has 8 divisors (see below), whose sum is σ = 73568000. Its totient is φ = 71768592.

The previous prime is 72666043. The next prime is 72666059. The reversal of 72666049 is 94066627.

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 72666049 - 2⁷ = 72665921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72666043) 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, 40432 + ... + 42190.

It is an arithmetic number, because the mean of its divisors is an integer number (9196000).

Almost surely, 2^72666049 is an apocalyptic number.

It is an amenable number.

72666049 is a deficient number, since it is larger than the sum of its proper divisors (901951).

72666049 is a wasteful number, since it uses less digits than its factorization.

72666049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 72666049 is about 8524.4383392690. The cubic root of 72666049 is about 417.2956419164.

The spelling of 72666049 in words is "seventy-two million, six hundred sixty-six thousand, forty-nine".