61946279 has 4 divisors (see below), whose sum is σ = 62089776. Its totient is φ = 61802784.

The previous prime is 61946263. The next prime is 61946299. The reversal of 61946279 is 97264916.

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 61946279 - 2⁴ = 61946263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61946299) 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, 71099 + ... + 71964.

It is an arithmetic number, because the mean of its divisors is an integer number (15522444).

Almost surely, 2^61946279 is an apocalyptic number.

61946279 is a deficient number, since it is larger than the sum of its proper divisors (143497).

61946279 is a wasteful number, since it uses less digits than its factorization.

61946279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143496.

The product of its digits is 163296, while the sum is 44.

The square root of 61946279 is about 7870.5958478377. The cubic root of 61946279 is about 395.6748150891.

The spelling of 61946279 in words is "sixty-one million, nine hundred forty-six thousand, two hundred seventy-nine".