74947765 has 4 divisors (see below), whose sum is σ = 89937324. Its totient is φ = 59958208.

The previous prime is 74947727. The next prime is 74947783. The reversal of 74947765 is 56774947.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7986276 + 66961489 = 2826^2 + 8183^2 .

It is a cyclic number.

It is not a de Polignac number, because 74947765 - 2¹⁵ = 74914997 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7494772 + ... + 7494781.

It is an arithmetic number, because the mean of its divisors is an integer number (22484331).

Almost surely, 2^74947765 is an apocalyptic number.

It is an amenable number.

74947765 is a deficient number, since it is larger than the sum of its proper divisors (14989559).

74947765 is a wasteful number, since it uses less digits than its factorization.

74947765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14989558.

The product of its digits is 1481760, while the sum is 49.

The square root of 74947765 is about 8657.2377234312. The cubic root of 74947765 is about 421.6184061237.

The spelling of 74947765 in words is "seventy-four million, nine hundred forty-seven thousand, seven hundred sixty-five".