61980259 has 4 divisors (see below), whose sum is σ = 67614840. Its totient is φ = 56345680.

The previous prime is 61980257. The next prime is 61980271. The reversal of 61980259 is 95208916.

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

It is a cyclic number.

It is not a de Polignac number, because 61980259 - 2¹ = 61980257 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61980251) 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, 2817274 + ... + 2817295.

It is an arithmetic number, because the mean of its divisors is an integer number (16903710).

Almost surely, 2^61980259 is an apocalyptic number.

61980259 is a deficient number, since it is larger than the sum of its proper divisors (5634581).

61980259 is a wasteful number, since it uses less digits than its factorization.

61980259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634580.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 61980259 is about 7872.7542194584. The cubic root of 61980259 is about 395.7471496603.

The spelling of 61980259 in words is "sixty-one million, nine hundred eighty thousand, two hundred fifty-nine".