61589487 has 16 divisors (see below), whose sum is σ = 87181920. Its totient is φ = 38541312.

The previous prime is 61589483. The next prime is 61589537. The reversal of 61589487 is 78498516.

It is not a de Polignac number, because 61589487 - 2² = 61589483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61589483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20689 + ... + 23477.

It is an arithmetic number, because the mean of its divisors is an integer number (5448870).

Almost surely, 2^61589487 is an apocalyptic number.

61589487 is a deficient number, since it is larger than the sum of its proper divisors (25592433).

61589487 is a wasteful number, since it uses less digits than its factorization.

61589487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242.

The product of its digits is 483840, while the sum is 48.

The square root of 61589487 is about 7847.8969794461. The cubic root of 61589487 is about 394.9136958271.

The spelling of 61589487 in words is "sixty-one million, five hundred eighty-nine thousand, four hundred eighty-seven".