61484580 has 144 divisors (see below), whose sum is σ = 200962944. Its totient is φ = 15160320.

The previous prime is 61484573. The next prime is 61484587. The reversal of 61484580 is 8548416.

It is an interprime number because it is at equal distance from previous prime (61484573) and next prime (61484587).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61484587) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217119 + ... + 217401.

It is an arithmetic number, because the mean of its divisors is an integer number (1395576).

Almost surely, 2^61484580 is an apocalyptic number.

61484580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61484580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100481472).

61484580 is an abundant number, since it is smaller than the sum of its proper divisors (139478364).

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

61484580 is a wasteful number, since it uses less digits than its factorization.

61484580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 61484580 is about 7841.2103657535. The cubic root of 61484580 is about 394.6893460889.

The spelling of 61484580 in words is "sixty-one million, four hundred eighty-four thousand, five hundred eighty".