61430560 has 24 divisors (see below), whose sum is σ = 145130076. Its totient is φ = 24572160.

The previous prime is 61430557. The next prime is 61430563. The reversal of 61430560 is 6503416.

It is an interprime number because it is at equal distance from previous prime (61430557) and next prime (61430563).

It can be written as a sum of positive squares in 2 ways, for example, as 58430736 + 2999824 = 7644^2 + 1732^2 .

It is not an unprimeable number, because it can be changed into a prime (61430563) 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, 191811 + ... + 192130.

Almost surely, 2^61430560 is an apocalyptic number.

It is an amenable number.

61430560 is an abundant number, since it is smaller than the sum of its proper divisors (83699516).

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

61430560 is a wasteful number, since it uses less digits than its factorization.

61430560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383956 (or 383948 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 61430560 is about 7837.7649875459. The cubic root of 61430560 is about 394.5737216199.

Adding to 61430560 its reverse (6503416), we get a palindrome (67933976).

The spelling of 61430560 in words is "sixty-one million, four hundred thirty thousand, five hundred sixty".