64290330 has 48 divisors (see below), whose sum is σ = 180016200. Its totient is φ = 15825024.

The previous prime is 64290329. The next prime is 64290341. The reversal of 64290330 is 3309246.

It can be written as a sum of positive squares in 4 ways, for example, as 34117281 + 30173049 = 5841^2 + 5493^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64290294 and 64290303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26305 + ... + 28644.

Almost surely, 2^64290330 is an apocalyptic number.

64290330 is an abundant number, since it is smaller than the sum of its proper divisors (115725870).

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

64290330 is a wasteful number, since it uses less digits than its factorization.

64290330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54975 (or 54972 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 64290330 is about 8018.1250925637. The cubic root of 64290330 is about 400.6039418434.

Adding to 64290330 its reverse (3309246), we get a palindrome (67599576).

It can be divided in two parts, 64290 and 330, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 64290330 in words is "sixty-four million, two hundred ninety thousand, three hundred thirty".