61347979 has 24 divisors (see below), whose sum is σ = 80759808. Its totient is φ = 45267120.

The previous prime is 61347953. The next prime is 61347983. The reversal of 61347979 is 97974316.

It is not a de Polignac number, because 61347979 - 2⁷ = 61347851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61347929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26694 + ... + 28900.

It is an arithmetic number, because the mean of its divisors is an integer number (3364992).

Almost surely, 2^61347979 is an apocalyptic number.

61347979 is a deficient number, since it is larger than the sum of its proper divisors (19411829).

61347979 is a wasteful number, since it uses less digits than its factorization.

61347979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263 (or 2244 counting only the distinct ones).

The product of its digits is 285768, while the sum is 46.

The square root of 61347979 is about 7832.4950686228. The cubic root of 61347979 is about 394.3968340663.

It can be divided in two parts, 61347 and 979, that added together give a palindrome (62326).

The spelling of 61347979 in words is "sixty-one million, three hundred forty-seven thousand, nine hundred seventy-nine".