74681151 has 4 divisors (see below), whose sum is σ = 99574872. Its totient is φ = 49787432.

The previous prime is 74681147. The next prime is 74681179. The reversal of 74681151 is 15118647.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15118647 = 3 ⋅5039549.

It is a cyclic number.

It is not a de Polignac number, because 74681151 - 2² = 74681147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74688151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12446856 + ... + 12446861.

It is an arithmetic number, because the mean of its divisors is an integer number (24893718).

Almost surely, 2^74681151 is an apocalyptic number.

74681151 is a deficient number, since it is larger than the sum of its proper divisors (24893721).

74681151 is a wasteful number, since it uses less digits than its factorization.

74681151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24893720.

The product of its digits is 6720, while the sum is 33.

The square root of 74681151 is about 8641.8256751684. The cubic root of 74681151 is about 421.1178667315.

Adding to 74681151 its reverse (15118647), we get a palindrome (89799798).

The spelling of 74681151 in words is "seventy-four million, six hundred eighty-one thousand, one hundred fifty-one".