61716379 has 8 divisors (see below), whose sum is σ = 64038960. Its totient is φ = 59406816.

The previous prime is 61716377. The next prime is 61716449. The reversal of 61716379 is 97361716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61716379 - 2¹ = 61716377 is a prime.

It is a super-2 number, since 2×61716379² = 7617822873743282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61716371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6997 + ... + 13129.

It is an arithmetic number, because the mean of its divisors is an integer number (8004870).

Almost surely, 2^61716379 is an apocalyptic number.

61716379 is a deficient number, since it is larger than the sum of its proper divisors (2322581).

61716379 is a wasteful number, since it uses less digits than its factorization.

61716379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6509.

The product of its digits is 47628, while the sum is 40.

The square root of 61716379 is about 7855.9772784804. The cubic root of 61716379 is about 395.1847215917.

The spelling of 61716379 in words is "sixty-one million, seven hundred sixteen thousand, three hundred seventy-nine".