61788885 has 8 divisors (see below), whose sum is σ = 98862240. Its totient is φ = 32954064.

The previous prime is 61788869. The next prime is 61788889. The reversal of 61788885 is 58888716.

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 61788885 - 2⁴ = 61788869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61788889) 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, 2059615 + ... + 2059644.

It is an arithmetic number, because the mean of its divisors is an integer number (12357780).

Almost surely, 2^61788885 is an apocalyptic number.

It is an amenable number.

61788885 is a deficient number, since it is larger than the sum of its proper divisors (37073355).

61788885 is a wasteful number, since it uses less digits than its factorization.

61788885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119267.

The product of its digits is 860160, while the sum is 51.

The square root of 61788885 is about 7860.5906266641. The cubic root of 61788885 is about 395.3394187744.

The spelling of 61788885 in words is "sixty-one million, seven hundred eighty-eight thousand, eight hundred eighty-five".