76921874 has 4 divisors (see below), whose sum is σ = 115382814. Its totient is φ = 38460936.

The previous prime is 76921847. The next prime is 76921907. The reversal of 76921874 is 47812967.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47812967 = 29 ⋅1648723.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 22972849 = 7345^2 + 4793^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19230467 + ... + 19230470.

Almost surely, 2^76921874 is an apocalyptic number.

76921874 is a deficient number, since it is larger than the sum of its proper divisors (38460940).

76921874 is a wasteful number, since it uses less digits than its factorization.

76921874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38460939.

The product of its digits is 169344, while the sum is 44.

The square root of 76921874 is about 8770.5116156357. The cubic root of 76921874 is about 425.2881533745.

The spelling of 76921874 in words is "seventy-six million, nine hundred twenty-one thousand, eight hundred seventy-four".