61879651 has 4 divisors (see below), whose sum is σ = 63552112. Its totient is φ = 60207192.

The previous prime is 61879633. The next prime is 61879661. The reversal of 61879651 is 15697816.

It is a happy number.

61879651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61879651 - 2¹⁷ = 61748579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61879598 and 61879607.

It is not an unprimeable number, because it can be changed into a prime (61879661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836175 + ... + 836248.

It is an arithmetic number, because the mean of its divisors is an integer number (15888028).

Almost surely, 2^61879651 is an apocalyptic number.

61879651 is a deficient number, since it is larger than the sum of its proper divisors (1672461).

61879651 is a wasteful number, since it uses less digits than its factorization.

61879651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672460.

The product of its digits is 90720, while the sum is 43.

The square root of 61879651 is about 7866.3619926876. The cubic root of 61879651 is about 395.5329046065.

The spelling of 61879651 in words is "sixty-one million, eight hundred seventy-nine thousand, six hundred fifty-one".