61879306 has 4 divisors (see below), whose sum is σ = 92818962. Its totient is φ = 30939652.

The previous prime is 61879289. The next prime is 61879309. The reversal of 61879306 is 60397816.

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

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 5103081 = 7535^2 + 2259^2 .

It is a super-2 number, since 2×61879306² = 7658097022083272, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (61879309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15469825 + ... + 15469828.

Almost surely, 2^61879306 is an apocalyptic number.

61879306 is a deficient number, since it is larger than the sum of its proper divisors (30939656).

61879306 is a wasteful number, since it uses less digits than its factorization.

61879306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30939655.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 61879306 is about 7866.3400638416. The cubic root of 61879306 is about 395.5321695285.

The spelling of 61879306 in words is "sixty-one million, eight hundred seventy-nine thousand, three hundred six".