61387060 has 24 divisors (see below), whose sum is σ = 147329280. Its totient is φ = 21046944.

The previous prime is 61387057. The next prime is 61387061. The reversal of 61387060 is 6078316.

It is a super-2 number, since 2×61387060² = 7536742270887200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61387061) 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, 219100 + ... + 219379.

It is an arithmetic number, because the mean of its divisors is an integer number (6138720).

Almost surely, 2^61387060 is an apocalyptic number.

It is an amenable number.

61387060 is an abundant number, since it is smaller than the sum of its proper divisors (85942220).

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

61387060 is a wasteful number, since it uses less digits than its factorization.

61387060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438495 (or 438493 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 61387060 is about 7834.9894703184. The cubic root of 61387060 is about 394.4805648923.

The spelling of 61387060 in words is "sixty-one million, three hundred eighty-seven thousand, sixty".