74149861 has 8 divisors (see below), whose sum is σ = 79870464. Its totient is φ = 68637360.

The previous prime is 74149847. The next prime is 74149883. The reversal of 74149861 is 16894147.

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

It is a cyclic number.

It is not a de Polignac number, because 74149861 - 2¹¹ = 74147813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74149891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51286 + ... + 52711.

It is an arithmetic number, because the mean of its divisors is an integer number (9983808).

Almost surely, 2^74149861 is an apocalyptic number.

It is an amenable number.

74149861 is a deficient number, since it is larger than the sum of its proper divisors (5720603).

74149861 is a wasteful number, since it uses less digits than its factorization.

74149861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104051.

The product of its digits is 48384, while the sum is 40.

The square root of 74149861 is about 8611.0313551862. The cubic root of 74149861 is about 420.1168627942.

The spelling of 74149861 in words is "seventy-four million, one hundred forty-nine thousand, eight hundred sixty-one".