61403679 has 6 divisors (see below), whose sum is σ = 88694216. Its totient is φ = 40935780.

The previous prime is 61403669. The next prime is 61403747. The reversal of 61403679 is 97630416.

61403679 is a `hidden beast` number, since 614 + 0 + 36 + 7 + 9 = 666.

It is not a de Polignac number, because 61403679 - 2¹⁶ = 61338143 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 (61403659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3411307 + ... + 3411324.

Almost surely, 2^61403679 is an apocalyptic number.

61403679 is a deficient number, since it is larger than the sum of its proper divisors (27290537).

61403679 is a wasteful number, since it uses less digits than its factorization.

61403679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822637 (or 6822634 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 61403679 is about 7836.0499615559. The cubic root of 61403679 is about 394.5161602386.

The spelling of 61403679 in words is "sixty-one million, four hundred three thousand, six hundred seventy-nine".