61570368 has 168 divisors, whose sum is σ = 189719712. Its totient is φ = 19782144.

The previous prime is 61570363. The next prime is 61570373. The reversal of 61570368 is 86307516.

61570368 is a `hidden beast` number, since 615 + 7 + 0 + 36 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (61570363) and next prime (61570373).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61570363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 575371 + ... + 575477.

It is an arithmetic number, because the mean of its divisors is an integer number (1129284).

Almost surely, 2^61570368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61570368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94859856).

61570368 is an abundant number, since it is smaller than the sum of its proper divisors (128149344).

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

61570368 is a wasteful number, since it uses less digits than its factorization.

61570368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 61570368 is about 7846.6787878694. The cubic root of 61570368 is about 394.8728277248.

The spelling of 61570368 in words is "sixty-one million, five hundred seventy thousand, three hundred sixty-eight".