61979193 has 6 divisors (see below), whose sum is σ = 89525514. Its totient is φ = 41319456.

The previous prime is 61979189. The next prime is 61979201. The reversal of 61979193 is 39197916.

It can be written as a sum of positive squares in only one way, i.e., 59166864 + 2812329 = 7692^2 + 1677^2 .

It is not a de Polignac number, because 61979193 - 2² = 61979189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61979143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3443280 + ... + 3443297.

It is an arithmetic number, because the mean of its divisors is an integer number (14920919).

Almost surely, 2^61979193 is an apocalyptic number.

It is an amenable number.

61979193 is a deficient number, since it is larger than the sum of its proper divisors (27546321).

61979193 is a wasteful number, since it uses less digits than its factorization.

61979193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886583 (or 6886580 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 61979193 is about 7872.6865173205. The cubic root of 61979193 is about 395.7448808257.

The spelling of 61979193 in words is "sixty-one million, nine hundred seventy-nine thousand, one hundred ninety-three".