61593987 has 16 divisors (see below), whose sum is σ = 101077760. Its totient is φ = 32488992.

The previous prime is 61593947. The next prime is 61594007. The reversal of 61593987 is 78939516.

It is not a de Polignac number, because 61593987 - 2¹⁴ = 61577603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61593947) 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, 112537 + ... + 113082.

It is an arithmetic number, because the mean of its divisors is an integer number (6317360).

Almost surely, 2^61593987 is an apocalyptic number.

61593987 is a deficient number, since it is larger than the sum of its proper divisors (39483773).

61593987 is a wasteful number, since it uses less digits than its factorization.

61593987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225642.

The product of its digits is 408240, while the sum is 48.

The square root of 61593987 is about 7848.1836752207. The cubic root of 61593987 is about 394.9233136393.

The spelling of 61593987 in words is "sixty-one million, five hundred ninety-three thousand, nine hundred eighty-seven".