61588140 has 48 divisors (see below), whose sum is σ = 173257728. Its totient is φ = 16346304.

The previous prime is 61588133. The next prime is 61588171. The reversal of 61588140 is 4188516.

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, 11079 + ... + 15681.

It is an arithmetic number, because the mean of its divisors is an integer number (3609536).

Almost surely, 2^61588140 is an apocalyptic number.

61588140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61588140 is an abundant number, since it is smaller than the sum of its proper divisors (111669588).

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

61588140 is a wasteful number, since it uses less digits than its factorization.

61588140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 61588140 is about 7847.8111598076. The cubic root of 61588140 is about 394.9108168042.

The spelling of 61588140 in words is "sixty-one million, five hundred eighty-eight thousand, one hundred forty".