73769721 has 8 divisors (see below), whose sum is σ = 98411040. Its totient is φ = 49154112.

The previous prime is 73769719. The next prime is 73769741. The reversal of 73769721 is 12796737.

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

It is not a de Polignac number, because 73769721 - 2¹ = 73769719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73769711) 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, 1761 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (12301380).

Almost surely, 2^73769721 is an apocalyptic number.

It is an amenable number.

73769721 is a deficient number, since it is larger than the sum of its proper divisors (24641319).

73769721 is a wasteful number, since it uses less digits than its factorization.

73769721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12855.

The product of its digits is 111132, while the sum is 42.

The square root of 73769721 is about 8588.9301429223. The cubic root of 73769721 is about 419.3977024527.

The spelling of 73769721 in words is "seventy-three million, seven hundred sixty-nine thousand, seven hundred twenty-one".