61298579 has 4 divisors (see below), whose sum is σ = 64524840. Its totient is φ = 58072320.

The previous prime is 61298569. The next prime is 61298593. The reversal of 61298579 is 97589216.

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-61298579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61298539) 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, 1613102 + ... + 1613139.

It is an arithmetic number, because the mean of its divisors is an integer number (16131210).

Almost surely, 2^61298579 is an apocalyptic number.

61298579 is a deficient number, since it is larger than the sum of its proper divisors (3226261).

61298579 is a wasteful number, since it uses less digits than its factorization.

61298579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226260.

The product of its digits is 272160, while the sum is 47.

The square root of 61298579 is about 7829.3409045717. The cubic root of 61298579 is about 394.2909439412.

The spelling of 61298579 in words is "sixty-one million, two hundred ninety-eight thousand, five hundred seventy-nine".