61104878 has 4 divisors (see below), whose sum is σ = 91657320. Its totient is φ = 30552438.

The previous prime is 61104847. The next prime is 61104881. The reversal of 61104878 is 87840116.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×61104878² = 7467612230789768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15276218 + ... + 15276221.

It is an arithmetic number, because the mean of its divisors is an integer number (22914330).

Almost surely, 2^61104878 is an apocalyptic number.

61104878 is a deficient number, since it is larger than the sum of its proper divisors (30552442).

61104878 is a wasteful number, since it uses less digits than its factorization.

61104878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30552441.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 61104878 is about 7816.9609184132. The cubic root of 61104878 is about 393.8751912994.

The spelling of 61104878 in words is "sixty-one million, one hundred four thousand, eight hundred seventy-eight".