61416979 has 4 divisors (see below), whose sum is σ = 66141376. Its totient is φ = 56692584.

The previous prime is 61416977. The next prime is 61416997. The reversal of 61416979 is 97961416.

It is a happy number.

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

It is not a de Polignac number, because 61416979 - 2¹ = 61416977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61416973) 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, 2362179 + ... + 2362204.

It is an arithmetic number, because the mean of its divisors is an integer number (16535344).

Almost surely, 2^61416979 is an apocalyptic number.

61416979 is a deficient number, since it is larger than the sum of its proper divisors (4724397).

61416979 is a wasteful number, since it uses less digits than its factorization.

61416979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724396.

The product of its digits is 81648, while the sum is 43.

The square root of 61416979 is about 7836.8985574652. The cubic root of 61416979 is about 394.5446421701.

The spelling of 61416979 in words is "sixty-one million, four hundred sixteen thousand, nine hundred seventy-nine".