76221371 has 4 divisors (see below), whose sum is σ = 76288632. Its totient is φ = 76154112.

The previous prime is 76221349. The next prime is 76221373. The reversal of 76221371 is 17312267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17312267 = 7 ⋅2473181.

It is a cyclic number.

It is not a de Polignac number, because 76221371 - 2¹⁸ = 75959227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76221373) 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, 31901 + ... + 34206.

It is an arithmetic number, because the mean of its divisors is an integer number (19072158).

Almost surely, 2^76221371 is an apocalyptic number.

76221371 is a deficient number, since it is larger than the sum of its proper divisors (67261).

76221371 is a wasteful number, since it uses less digits than its factorization.

76221371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67260.

The product of its digits is 3528, while the sum is 29.

The square root of 76221371 is about 8730.4851526132. The cubic root of 76221371 is about 423.9932266481.

The spelling of 76221371 in words is "seventy-six million, two hundred twenty-one thousand, three hundred seventy-one".