61351679 has 4 divisors (see below), whose sum is σ = 61596360. Its totient is φ = 61107000.

The previous prime is 61351673. The next prime is 61351711. The reversal of 61351679 is 97615316.

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 61351679 - 2⁴ = 61351663 is a prime.

It is a super-2 number, since 2×61351679² = 7528057032238082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61351673) 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, 121964 + ... + 122465.

It is an arithmetic number, because the mean of its divisors is an integer number (15399090).

Almost surely, 2^61351679 is an apocalyptic number.

61351679 is a deficient number, since it is larger than the sum of its proper divisors (244681).

61351679 is a wasteful number, since it uses less digits than its factorization.

61351679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244680.

The product of its digits is 34020, while the sum is 38.

The square root of 61351679 is about 7832.7312605502. The cubic root of 61351679 is about 394.4047628195.

The spelling of 61351679 in words is "sixty-one million, three hundred fifty-one thousand, six hundred seventy-nine".