76640271 has 8 divisors (see below), whose sum is σ = 102412464. Its totient is φ = 50980800.

The previous prime is 76640261. The next prime is 76640293. The reversal of 76640271 is 17204667.

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

It is not a de Polignac number, because 76640271 - 2¹¹ = 76638223 is a prime.

It is a super-2 number, since 2×76640271² = 11747462277906882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76640231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26580 + ... + 29321.

It is an arithmetic number, because the mean of its divisors is an integer number (12801558).

Almost surely, 2^76640271 is an apocalyptic number.

76640271 is a deficient number, since it is larger than the sum of its proper divisors (25772193).

76640271 is a wasteful number, since it uses less digits than its factorization.

76640271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56361.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 76640271 is about 8754.4429291646. The cubic root of 76640271 is about 424.7685401725.

The spelling of 76640271 in words is "seventy-six million, six hundred forty thousand, two hundred seventy-one".