61401679 has 8 divisors (see below), whose sum is σ = 62410320. Its totient is φ = 60400896.

The previous prime is 61401653. The next prime is 61401689. The reversal of 61401679 is 97610416.

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

It is a cyclic number.

It is not a de Polignac number, because 61401679 - 2⁵ = 61401647 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 (61401689) 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, 14952 + ... + 18610.

It is an arithmetic number, because the mean of its divisors is an integer number (7801290).

Almost surely, 2^61401679 is an apocalyptic number.

61401679 is a deficient number, since it is larger than the sum of its proper divisors (1008641).

61401679 is a wasteful number, since it uses less digits than its factorization.

61401679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61401679 is about 7835.9223451997. The cubic root of 61401679 is about 394.5118768857.

The spelling of 61401679 in words is "sixty-one million, four hundred one thousand, six hundred seventy-nine".