74747665 has 8 divisors (see below), whose sum is σ = 92590848. Its totient is φ = 57869040.

The previous prime is 74747663. The next prime is 74747669. The reversal of 74747665 is 56674747.

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

It is not a de Polignac number, because 74747665 - 2¹ = 74747663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74747663) 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, 240967 + ... + 241276.

It is an arithmetic number, because the mean of its divisors is an integer number (11573856).

Almost surely, 2^74747665 is an apocalyptic number.

It is an amenable number.

74747665 is a deficient number, since it is larger than the sum of its proper divisors (17843183).

74747665 is a wasteful number, since it uses less digits than its factorization.

74747665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482279.

The product of its digits is 987840, while the sum is 46.

The square root of 74747665 is about 8645.6731953041. The cubic root of 74747665 is about 421.2428510675.

The spelling of 74747665 in words is "seventy-four million, seven hundred forty-seven thousand, six hundred sixty-five".