61064430 has 128 divisors (see below), whose sum is σ = 178606080. Its totient is φ = 13063680.

The previous prime is 61064417. The next prime is 61064431. The reversal of 61064430 is 3446016.

It is a super-2 number, since 2×61064430² = 7457729222449800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61064430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61064431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 225195 + ... + 225465.

It is an arithmetic number, because the mean of its divisors is an integer number (1395360).

Almost surely, 2^61064430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61064430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89303040).

61064430 is an abundant number, since it is smaller than the sum of its proper divisors (117541650).

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

61064430 is a wasteful number, since it uses less digits than its factorization.

61064430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 61064430 is about 7814.3732954089. The cubic root of 61064430 is about 393.7882643590.

The spelling of 61064430 in words is "sixty-one million, sixty-four thousand, four hundred thirty".