61078887 has 16 divisors (see below), whose sum is σ = 90720000. Its totient is φ = 40614552.

The previous prime is 61078883. The next prime is 61078921. The reversal of 61078887 is 78887016.

It is not a de Polignac number, because 61078887 - 2² = 61078883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61078883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8614 + ... + 14012.

It is an arithmetic number, because the mean of its divisors is an integer number (5670000).

Almost surely, 2^61078887 is an apocalyptic number.

61078887 is a deficient number, since it is larger than the sum of its proper divisors (29641113).

61078887 is a wasteful number, since it uses less digits than its factorization.

61078887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5827 (or 5821 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 61078887 is about 7815.2982668610. The cubic root of 61078887 is about 393.8193383559.

It can be divided in two parts, 610 and 78887, that added together give a palindrome (79497).

The spelling of 61078887 in words is "sixty-one million, seventy-eight thousand, eight hundred eighty-seven".