61584871 has 4 divisors (see below), whose sum is σ = 64826200. Its totient is φ = 58343544.

The previous prime is 61584857. The next prime is 61584973. The reversal of 61584871 is 17848516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61584871 - 2⁵ = 61584839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61584821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620636 + ... + 1620673.

It is an arithmetic number, because the mean of its divisors is an integer number (16206550).

Almost surely, 2^61584871 is an apocalyptic number.

61584871 is a deficient number, since it is larger than the sum of its proper divisors (3241329).

61584871 is a wasteful number, since it uses less digits than its factorization.

61584871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241328.

The product of its digits is 53760, while the sum is 40.

The square root of 61584871 is about 7847.6028824094. The cubic root of 61584871 is about 394.9038296024.

The spelling of 61584871 in words is "sixty-one million, five hundred eighty-four thousand, eight hundred seventy-one".