61328604 has 12 divisors (see below), whose sum is σ = 143100104. Its totient is φ = 20442864.

The previous prime is 61328563. The next prime is 61328609. The reversal of 61328604 is 40682316.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×61328604² = 7522395337177632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61328609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555347 + ... + 2555370.

Almost surely, 2^61328604 is an apocalyptic number.

It is an amenable number.

61328604 is an abundant number, since it is smaller than the sum of its proper divisors (81771500).

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

61328604 is a wasteful number, since it uses less digits than its factorization.

61328604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110724 (or 5110722 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 61328604 is about 7831.2581364682. The cubic root of 61328604 is about 394.3553100511.

The spelling of 61328604 in words is "sixty-one million, three hundred twenty-eight thousand, six hundred four".