61704137 has 16 divisors (see below), whose sum is σ = 69284160. Its totient is φ = 54475200.

The previous prime is 61704133. The next prime is 61704157. The reversal of 61704137 is 73140716.

It is a cyclic number.

It is not a de Polignac number, because 61704137 - 2² = 61704133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61704131) 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, 63062 + ... + 64032.

It is an arithmetic number, because the mean of its divisors is an integer number (4330260).

Almost surely, 2^61704137 is an apocalyptic number.

It is an amenable number.

61704137 is a deficient number, since it is larger than the sum of its proper divisors (7580023).

61704137 is a wasteful number, since it uses less digits than its factorization.

61704137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 61704137 is about 7855.1980878906. The cubic root of 61704137 is about 395.1585903801.

The spelling of 61704137 in words is "sixty-one million, seven hundred four thousand, one hundred thirty-seven".