61283878 has 16 divisors (see below), whose sum is σ = 97853184. Its totient is φ = 28685440.

The previous prime is 61283857. The next prime is 61283879. The reversal of 61283878 is 87838216.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61283879) 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, 1776 + ... + 11212.

It is an arithmetic number, because the mean of its divisors is an integer number (6115824).

Almost surely, 2^61283878 is an apocalyptic number.

61283878 is a deficient number, since it is larger than the sum of its proper divisors (36569306).

61283878 is a wasteful number, since it uses less digits than its factorization.

61283878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647.

The product of its digits is 129024, while the sum is 43.

The square root of 61283878 is about 7828.4020080729. The cubic root of 61283878 is about 394.2594209995.

The spelling of 61283878 in words is "sixty-one million, two hundred eighty-three thousand, eight hundred seventy-eight".