64161420 has 48 divisors (see below), whose sum is σ = 180096000. Its totient is φ = 17067456.

The previous prime is 64161401. The next prime is 64161431. The reversal of 64161420 is 2416146.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28869 + ... + 31011.

It is an arithmetic number, because the mean of its divisors is an integer number (3752000).

Almost surely, 2^64161420 is an apocalyptic number.

64161420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64161420 is an abundant number, since it is smaller than the sum of its proper divisors (115934580).

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

64161420 is a wasteful number, since it uses less digits than its factorization.

64161420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2652 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 64161420 is about 8010.0823965800. The cubic root of 64161420 is about 400.3360093320.

Adding to 64161420 its reverse (2416146), we get a palindrome (66577566).

The spelling of 64161420 in words is "sixty-four million, one hundred sixty-one thousand, four hundred twenty".