61078893 has 4 divisors (see below), whose sum is σ = 81438528. Its totient is φ = 40719260.

The previous prime is 61078883. The next prime is 61078921. The reversal of 61078893 is 39887016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61078893 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 3 ways as a sum of consecutive naturals, for example, 10179813 + ... + 10179818.

It is an arithmetic number, because the mean of its divisors is an integer number (20359632).

Almost surely, 2^61078893 is an apocalyptic number.

It is an amenable number.

61078893 is a deficient number, since it is larger than the sum of its proper divisors (20359635).

61078893 is a wasteful number, since it uses less digits than its factorization.

61078893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20359634.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 61078893 is about 7815.2986507235. The cubic root of 61078893 is about 393.8193512513.

The spelling of 61078893 in words is "sixty-one million, seventy-eight thousand, eight hundred ninety-three".