61879215 has 8 divisors (see below), whose sum is σ = 99006768. Its totient is φ = 33002240.

The previous prime is 61879187. The next prime is 61879217. The reversal of 61879215 is 51297816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61879215 - 2⁵ = 61879183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61879217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2062626 + ... + 2062655.

It is an arithmetic number, because the mean of its divisors is an integer number (12375846).

Almost surely, 2^61879215 is an apocalyptic number.

61879215 is a deficient number, since it is larger than the sum of its proper divisors (37127553).

61879215 is a wasteful number, since it uses less digits than its factorization.

61879215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125289.

The product of its digits is 30240, while the sum is 39.

The square root of 61879215 is about 7866.3342797011. The cubic root of 61879215 is about 395.5319756379.

The spelling of 61879215 in words is "sixty-one million, eight hundred seventy-nine thousand, two hundred fifteen".