61064320 has 32 divisors (see below), whose sum is σ = 145983420. Its totient is φ = 24425472.

The previous prime is 61064317. The next prime is 61064359. The reversal of 61064320 is 2346016.

It can be written as a sum of positive squares in 2 ways, for example, as 57881664 + 3182656 = 7608^2 + 1784^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 61064291 and 61064300.

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, 47067 + ... + 48346.

Almost surely, 2^61064320 is an apocalyptic number.

It is an amenable number.

61064320 is an abundant number, since it is smaller than the sum of its proper divisors (84919100).

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

61064320 is an equidigital number, since it uses as much as digits as its factorization.

61064320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95432 (or 95420 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 61064320 is about 7814.3662570934. The cubic root of 61064320 is about 393.7880279053.

The spelling of 61064320 in words is "sixty-one million, sixty-four thousand, three hundred twenty".