61385784 has 16 divisors (see below), whose sum is σ = 153464520. Its totient is φ = 20461920.

The previous prime is 61385767. The next prime is 61385801. The reversal of 61385784 is 48758316.

It is an interprime number because it is at equal distance from previous prime (61385767) and next prime (61385801).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278847 + ... + 1278894.

Almost surely, 2^61385784 is an apocalyptic number.

It is an amenable number.

61385784 is an abundant number, since it is smaller than the sum of its proper divisors (92078736).

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

61385784 is a wasteful number, since it uses less digits than its factorization.

61385784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557750 (or 2557746 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 61385784 is about 7834.9080403027. The cubic root of 61385784 is about 394.4778316306.

The spelling of 61385784 in words is "sixty-one million, three hundred eighty-five thousand, seven hundred eighty-four".