76871761 has 4 divisors (see below), whose sum is σ = 78746724. Its totient is φ = 74996800.

The previous prime is 76871741. The next prime is 76871791. The reversal of 76871761 is 16717867.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7049025 + 69822736 = 2655^2 + 8356^2 .

It is a cyclic number.

It is not a de Polignac number, because 76871761 - 2¹¹ = 76869713 is a prime.

It is a super-3 number, since 3×76871761³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76871741) 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, 937420 + ... + 937501.

It is an arithmetic number, because the mean of its divisors is an integer number (19686681).

Almost surely, 2^76871761 is an apocalyptic number.

It is an amenable number.

76871761 is a deficient number, since it is larger than the sum of its proper divisors (1874963).

76871761 is a wasteful number, since it uses less digits than its factorization.

76871761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874962.

The product of its digits is 98784, while the sum is 43.

The square root of 76871761 is about 8767.6542472887. The cubic root of 76871761 is about 425.1957778511.

The spelling of 76871761 in words is "seventy-six million, eight hundred seventy-one thousand, seven hundred sixty-one".