61653064 has 64 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 26410560.

The previous prime is 61653061. The next prime is 61653077. The reversal of 61653064 is 46035616.

It is a super-2 number, since 2×61653064² = 7602200601176192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61653061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167809 + ... + 168175.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^61653064 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 61653064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66769920).

61653064 is an abundant number, since it is smaller than the sum of its proper divisors (71886776).

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

61653064 is a wasteful number, since it uses less digits than its factorization.

61653064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 61653064 is about 7851.9465102610. The cubic root of 61653064 is about 395.0495349938.

It can be divided in two parts, 6165 and 3064, that added together give a palindrome (9229).

The spelling of 61653064 in words is "sixty-one million, six hundred fifty-three thousand, sixty-four".