74077661 has 12 divisors (see below), whose sum is σ = 86375520. Its totient is φ = 63345240.

The previous prime is 74077657. The next prime is 74077667. The reversal of 74077661 is 16677047.

It is a happy number.

It is not a de Polignac number, because 74077661 - 2² = 74077657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74077667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22520 + ... + 25598.

It is an arithmetic number, because the mean of its divisors is an integer number (7197960).

Almost surely, 2^74077661 is an apocalyptic number.

It is an amenable number.

74077661 is a deficient number, since it is larger than the sum of its proper divisors (12297859).

74077661 is a wasteful number, since it uses less digits than its factorization.

74077661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584 (or 3577 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 74077661 is about 8606.8380372818. The cubic root of 74077661 is about 419.9804620541.

The spelling of 74077661 in words is "seventy-four million, seventy-seven thousand, six hundred sixty-one".