61099713 has 12 divisors (see below), whose sum is σ = 88367188. Its totient is φ = 40681440.

The previous prime is 61099699. The next prime is 61099721. The reversal of 61099713 is 31799016.

It can be written as a sum of positive squares in 2 ways, for example, as 32455809 + 28643904 = 5697^2 + 5352^2 .

It is not a de Polignac number, because 61099713 - 2¹⁷ = 60968641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61099733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4023 + ... + 11763.

Almost surely, 2^61099713 is an apocalyptic number.

It is an amenable number.

61099713 is a deficient number, since it is larger than the sum of its proper divisors (27267475).

61099713 is a wasteful number, since it uses less digits than its factorization.

61099713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8624 (or 8621 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 61099713 is about 7816.6305400729. The cubic root of 61099713 is about 393.8640933165.

The spelling of 61099713 in words is "sixty-one million, ninety-nine thousand, seven hundred thirteen".