61707849 has 16 divisors (see below), whose sum is σ = 95321472. Its totient is φ = 34777728.

The previous prime is 61707803. The next prime is 61707857. The reversal of 61707849 is 94870716.

It is not a de Polignac number, because 61707849 - 2⁷ = 61707721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61707849.

It is not an unprimeable number, because it can be changed into a prime (61707859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18594 + ... + 21659.

It is an arithmetic number, because the mean of its divisors is an integer number (5957592).

Almost surely, 2^61707849 is an apocalyptic number.

It is an amenable number.

61707849 is a deficient number, since it is larger than the sum of its proper divisors (33613623).

61707849 is a wasteful number, since it uses less digits than its factorization.

61707849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40336.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 61707849 is about 7855.4343610013. The cubic root of 61707849 is about 395.1665142101.

The spelling of 61707849 in words is "sixty-one million, seven hundred seven thousand, eight hundred forty-nine".