61528608 has 36 divisors (see below), whose sum is σ = 174972798. Its totient is φ = 20509440.

The previous prime is 61528591. The next prime is 61528609. The reversal of 61528608 is 80682516.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 61027344 + 501264 = 7812^2 + 708^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (61528609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106533 + ... + 107108.

Almost surely, 2^61528608 is an apocalyptic number.

It is an amenable number.

61528608 is an abundant number, since it is smaller than the sum of its proper divisors (113444190).

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

61528608 is a wasteful number, since it uses less digits than its factorization.

61528608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213657 (or 213646 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 61528608 is about 7844.0173380736. The cubic root of 61528608 is about 394.7835335871.

The spelling of 61528608 in words is "sixty-one million, five hundred twenty-eight thousand, six hundred eight".