74709783665 has 8 divisors (see below), whose sum is σ = 97801898688. Its totient is φ = 54334388080.

The previous prime is 74709783661. The next prime is 74709783677. The reversal of 74709783665 is 56638790747.

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

It is not a de Polignac number, because 74709783665 - 2² = 74709783661 is a prime.

It is a super-2 number, since 2×74709783665² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74709783598 and 74709783607.

It is not an unprimeable number, because it can be changed into a prime (74709783661) 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, 679179797 + ... + 679179906.

It is an arithmetic number, because the mean of its divisors is an integer number (12225237336).

Almost surely, 2^74709783665 is an apocalyptic number.

It is an amenable number.

74709783665 is a deficient number, since it is larger than the sum of its proper divisors (23092115023).

74709783665 is a wasteful number, since it uses less digits than its factorization.

74709783665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358359719.

The product of its (nonzero) digits is 53343360, while the sum is 62.

The spelling of 74709783665 in words is "seventy-four billion, seven hundred nine million, seven hundred eighty-three thousand, six hundred sixty-five".