76642077 has 4 divisors (see below), whose sum is σ = 102189440. Its totient is φ = 51094716.

The previous prime is 76642063. The next prime is 76642091. The reversal of 76642077 is 77024667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (76642063) and next prime (76642091).

It is not a de Polignac number, because 76642077 - 2⁸ = 76641821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76642277) 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, 12773677 + ... + 12773682.

It is an arithmetic number, because the mean of its divisors is an integer number (25547360).

Almost surely, 2^76642077 is an apocalyptic number.

It is an amenable number.

76642077 is a deficient number, since it is larger than the sum of its proper divisors (25547363).

76642077 is a wasteful number, since it uses less digits than its factorization.

76642077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25547362.

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 76642077 is about 8754.5460761824. The cubic root of 76642077 is about 424.7718766515.

The spelling of 76642077 in words is "seventy-six million, six hundred forty-two thousand, seventy-seven".