74681685 has 48 divisors (see below), whose sum is σ = 146764800. Its totient is φ = 34826112.

The previous prime is 74681683. The next prime is 74681689. The reversal of 74681685 is 58618647.

It is a happy number.

It is not a de Polignac number, because 74681685 - 2¹ = 74681683 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 74681685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74681683) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7756 + ... + 14474.

It is an arithmetic number, because the mean of its divisors is an integer number (3057600).

Almost surely, 2^74681685 is an apocalyptic number.

It is an amenable number.

74681685 is a deficient number, since it is larger than the sum of its proper divisors (72083115).

74681685 is a wasteful number, since it uses less digits than its factorization.

74681685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762 (or 6759 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 74681685 is about 8641.8565713624. The cubic root of 74681685 is about 421.1188704493.

The spelling of 74681685 in words is "seventy-four million, six hundred eighty-one thousand, six hundred eighty-five".