61820484 has 48 divisors (see below), whose sum is σ = 158953536. Its totient is φ = 18544000.

The previous prime is 61820467. The next prime is 61820491. The reversal of 61820484 is 48402816.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 11014 + ... + 15650.

It is an arithmetic number, because the mean of its divisors is an integer number (3311532).

Almost surely, 2^61820484 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 61820484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79476768).

61820484 is an abundant number, since it is smaller than the sum of its proper divisors (97133052).

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

61820484 is a wasteful number, since it uses less digits than its factorization.

61820484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756 (or 4754 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 61820484 is about 7862.6003332231. The cubic root of 61820484 is about 395.4067998326.

The spelling of 61820484 in words is "sixty-one million, eight hundred twenty thousand, four hundred eighty-four".