61676579 has 4 divisors (see below), whose sum is σ = 61934880. Its totient is φ = 61418280.

The previous prime is 61676567. The next prime is 61676597. The reversal of 61676579 is 97567616.

It is a happy number.

61676579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61676579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61676509) 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, 128792 + ... + 129269.

It is an arithmetic number, because the mean of its divisors is an integer number (15483720).

Almost surely, 2^61676579 is an apocalyptic number.

61676579 is a deficient number, since it is larger than the sum of its proper divisors (258301).

61676579 is a wasteful number, since it uses less digits than its factorization.

61676579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258300.

The product of its digits is 476280, while the sum is 47.

The square root of 61676579 is about 7853.4437669089. The cubic root of 61676579 is about 395.0997536876.

The spelling of 61676579 in words is "sixty-one million, six hundred seventy-six thousand, five hundred seventy-nine".