61378960 has 40 divisors (see below), whose sum is σ = 143222976. Its totient is φ = 24462720.

The previous prime is 61378951. The next prime is 61378969. The reversal of 61378960 is 6987316.

It is an interprime number because it is at equal distance from previous prime (61378951) and next prime (61378969).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (61378969) 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, 23647 + ... + 26113.

Almost surely, 2^61378960 is an apocalyptic number.

It is an amenable number.

61378960 is an abundant number, since it is smaller than the sum of its proper divisors (81844016).

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

61378960 is a wasteful number, since it uses less digits than its factorization.

61378960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 61378960 is about 7834.4725412755. The cubic root of 61378960 is about 394.4632136072.

The spelling of 61378960 in words is "sixty-one million, three hundred seventy-eight thousand, nine hundred sixty".