76763381 has 4 divisors (see below), whose sum is σ = 81278892. Its totient is φ = 72247872.

The previous prime is 76763353. The next prime is 76763389. The reversal of 76763381 is 18336767.

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 21022225 + 55741156 = 4585^2 + 7466^2 .

It is a cyclic number.

It is not a de Polignac number, because 76763381 - 2¹⁴ = 76746997 is a prime.

It is a super-2 number, since 2×76763381² = 11785233325102322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76763389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2257730 + ... + 2257763.

It is an arithmetic number, because the mean of its divisors is an integer number (20319723).

Almost surely, 2^76763381 is an apocalyptic number.

It is an amenable number.

76763381 is a deficient number, since it is larger than the sum of its proper divisors (4515511).

76763381 is a wasteful number, since it uses less digits than its factorization.

76763381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515510.

The product of its digits is 127008, while the sum is 41.

The square root of 76763381 is about 8761.4713946916. The cubic root of 76763381 is about 424.9958587832.

The spelling of 76763381 in words is "seventy-six million, seven hundred sixty-three thousand, three hundred eighty-one".