64501420 has 12 divisors (see below), whose sum is σ = 135453024. Its totient is φ = 25800560.

The previous prime is 64501403. The next prime is 64501427. The reversal of 64501420 is 2410546.

It is a junction number, because it is equal to n+sod(n) for n = 64501391 and 64501400.

It is not an unprimeable number, because it can be changed into a prime (64501427) 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, 1612516 + ... + 1612555.

It is an arithmetic number, because the mean of its divisors is an integer number (11287752).

Almost surely, 2^64501420 is an apocalyptic number.

It is an amenable number.

64501420 is an abundant number, since it is smaller than the sum of its proper divisors (70951604).

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

64501420 is a wasteful number, since it uses less digits than its factorization.

64501420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225080 (or 3225078 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 64501420 is about 8031.2776069564. The cubic root of 64501420 is about 401.0419087092.

Adding to 64501420 its reverse (2410546), we get a palindrome (66911966).

The spelling of 64501420 in words is "sixty-four million, five hundred one thousand, four hundred twenty".