61587869 has 8 divisors (see below), whose sum is σ = 72288768. Its totient is φ = 51362640.

The previous prime is 61587853. The next prime is 61587871. The reversal of 61587869 is 96878516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61587869 - 2⁴ = 61587853 is a prime.

It is a super-2 number, since 2×61587869² = 7586131215922322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61587829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118637 + ... + 119154.

It is an arithmetic number, because the mean of its divisors is an integer number (9036096).

Almost surely, 2^61587869 is an apocalyptic number.

It is an amenable number.

61587869 is a deficient number, since it is larger than the sum of its proper divisors (10700899).

61587869 is a wasteful number, since it uses less digits than its factorization.

61587869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237835.

The product of its digits is 725760, while the sum is 50.

The square root of 61587869 is about 7847.7938938277. The cubic root of 61587869 is about 394.9102375748.

The spelling of 61587869 in words is "sixty-one million, five hundred eighty-seven thousand, eight hundred sixty-nine".