73729765 has 8 divisors (see below), whose sum is σ = 93680280. Its totient is φ = 55514112.

The previous prime is 73729757. The next prime is 73729771. The reversal of 73729765 is 56792737.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2934369 + 70795396 = 1713^2 + 8414^2 .

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

It is not a de Polignac number, because 73729765 - 2³ = 73729757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433620 + ... + 433789.

It is an arithmetic number, because the mean of its divisors is an integer number (11710035).

Almost surely, 2^73729765 is an apocalyptic number.

It is an amenable number.

73729765 is a deficient number, since it is larger than the sum of its proper divisors (19950515).

73729765 is a wasteful number, since it uses less digits than its factorization.

73729765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867431.

The product of its digits is 555660, while the sum is 46.

The square root of 73729765 is about 8586.6038105877. The cubic root of 73729765 is about 419.3219691177.

The spelling of 73729765 in words is "seventy-three million, seven hundred twenty-nine thousand, seven hundred sixty-five".