61788375 has 48 divisors (see below), whose sum is σ = 121533984. Its totient is φ = 29952000.

The previous prime is 61788359. The next prime is 61788379. The reversal of 61788375 is 57388716.

It is not a de Polignac number, because 61788375 - 2⁴ = 61788359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61788375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61788379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9879 + ... + 14871.

It is an arithmetic number, because the mean of its divisors is an integer number (2531958).

Almost surely, 2^61788375 is an apocalyptic number.

61788375 is a deficient number, since it is larger than the sum of its proper divisors (59745609).

61788375 is a wasteful number, since it uses less digits than its factorization.

61788375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025 (or 5012 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 61788375 is about 7860.5581862868. The cubic root of 61788375 is about 395.3383310726.

The spelling of 61788375 in words is "sixty-one million, seven hundred eighty-eight thousand, three hundred seventy-five".