61024820 has 12 divisors (see below), whose sum is σ = 128152164. Its totient is φ = 24409920.

The previous prime is 61024813. The next prime is 61024823. The reversal of 61024820 is 2842016.

It can be written as a sum of positive squares in 2 ways, for example, as 14047504 + 46977316 = 3748^2 + 6854^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61024823) 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, 1525601 + ... + 1525640.

It is an arithmetic number, because the mean of its divisors is an integer number (10679347).

Almost surely, 2^61024820 is an apocalyptic number.

It is an amenable number.

61024820 is an abundant number, since it is smaller than the sum of its proper divisors (67127344).

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

61024820 is a wasteful number, since it uses less digits than its factorization.

61024820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051250 (or 3051248 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 61024820 is about 7811.8384519907. The cubic root of 61024820 is about 393.7031011581.

Adding to 61024820 its reverse (2842016), we get a palindrome (63866836).

The spelling of 61024820 in words is "sixty-one million, twenty-four thousand, eight hundred twenty".