61385460 has 48 divisors (see below), whose sum is σ = 177811200. Its totient is φ = 15804544.

The previous prime is 61385411. The next prime is 61385497. The reversal of 61385460 is 6458316.

Added to its reverse (6458316) it gives a triangular number (67843776 = T₁₁₆₄₈).

It is a congruent number.

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, 15900 + ... + 19379.

It is an arithmetic number, because the mean of its divisors is an integer number (3704400).

Almost surely, 2^61385460 is an apocalyptic number.

61385460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61385460 is an abundant number, since it is smaller than the sum of its proper divisors (116425740).

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

61385460 is a wasteful number, since it uses less digits than its factorization.

61385460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35320 (or 35318 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 61385460 is about 7834.8873635809. The cubic root of 61385460 is about 394.4771375989.

Adding to 61385460 its reverse (6458316), we get a triangular number (67843776 = T₁₁₆₄₈).

The spelling of 61385460 in words is "sixty-one million, three hundred eighty-five thousand, four hundred sixty".