73947765 has 16 divisors (see below), whose sum is σ = 119366208. Its totient is φ = 39088896.

The previous prime is 73947761. The next prime is 73947787. The reversal of 73947765 is 56774937.

It is not a de Polignac number, because 73947765 - 2² = 73947761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73947761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20119 + ... + 23508.

It is an arithmetic number, because the mean of its divisors is an integer number (7460388).

Almost surely, 2^73947765 is an apocalyptic number.

It is an amenable number.

73947765 is a deficient number, since it is larger than the sum of its proper divisors (45418443).

73947765 is a wasteful number, since it uses less digits than its factorization.

73947765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43748.

The product of its digits is 1111320, while the sum is 48.

The square root of 73947765 is about 8599.2886333696. The cubic root of 73947765 is about 419.7348382977.

The spelling of 73947765 in words is "seventy-three million, nine hundred forty-seven thousand, seven hundred sixty-five".