61854380 has 48 divisors (see below), whose sum is σ = 152475456. Its totient is φ = 20632320.

The previous prime is 61854379. The next prime is 61854391. The reversal of 61854380 is 8345816.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 61854380.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791 + ... + 11150.

It is an arithmetic number, because the mean of its divisors is an integer number (3176572).

Almost surely, 2^61854380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61854380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76237728).

61854380 is an abundant number, since it is smaller than the sum of its proper divisors (90621076).

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

61854380 is a wasteful number, since it uses less digits than its factorization.

61854380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11994 (or 11992 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 61854380 is about 7864.7555588206. The cubic root of 61854380 is about 395.4790534461.

The spelling of 61854380 in words is "sixty-one million, eight hundred fifty-four thousand, three hundred eighty".