61378854 has 16 divisors (see below), whose sum is σ = 129218880. Its totient is φ = 19382760.

The previous prime is 61378847. The next prime is 61378879. The reversal of 61378854 is 45887316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269092 + ... + 269319.

It is an arithmetic number, because the mean of its divisors is an integer number (8076180).

Almost surely, 2^61378854 is an apocalyptic number.

61378854 is an abundant number, since it is smaller than the sum of its proper divisors (67840026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61378854 is a wasteful number, since it uses less digits than its factorization.

61378854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538435.

The product of its digits is 161280, while the sum is 42.

The square root of 61378854 is about 7834.4657762990. The cubic root of 61378854 is about 394.4629865309.

The spelling of 61378854 in words is "sixty-one million, three hundred seventy-eight thousand, eight hundred fifty-four".