77679061 has 4 divisors (see below), whose sum is σ = 77696800. Its totient is φ = 77661324.

The previous prime is 77679059. The next prime is 77679067. The reversal of 77679061 is 16097677.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 77679061 - 2¹ = 77679059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77678999 and 77679017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77679067) 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, 2950 + ... + 12808.

It is an arithmetic number, because the mean of its divisors is an integer number (19424200).

Almost surely, 2^77679061 is an apocalyptic number.

It is an amenable number.

77679061 is a deficient number, since it is larger than the sum of its proper divisors (17739).

77679061 is an equidigital number, since it uses as much as digits as its factorization.

77679061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17738.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 77679061 is about 8813.5725446609. The cubic root of 77679061 is about 426.6790528495.

The spelling of 77679061 in words is "seventy-seven million, six hundred seventy-nine thousand, sixty-one".