61252660 has 24 divisors (see below), whose sum is σ = 147006720. Its totient is φ = 21000864.

The previous prime is 61252651. The next prime is 61252663. The reversal of 61252660 is 6625216.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61252663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218620 + ... + 218899.

It is an arithmetic number, because the mean of its divisors is an integer number (6125280).

Almost surely, 2^61252660 is an apocalyptic number.

It is an amenable number.

61252660 is an abundant number, since it is smaller than the sum of its proper divisors (85754060).

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

61252660 is a wasteful number, since it uses less digits than its factorization.

61252660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437535 (or 437533 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 61252660 is about 7826.4078605705. The cubic root of 61252660 is about 394.1924643953.

Adding to 61252660 its reverse (6625216), we get a palindrome (67877876).

The spelling of 61252660 in words is "sixty-one million, two hundred fifty-two thousand, six hundred sixty".