64270020 has 48 divisors (see below), whose sum is σ = 180307008. Its totient is φ = 17105280.

The previous prime is 64270007. The next prime is 64270033. The reversal of 64270020 is 2007246.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64270007) and next prime (64270033).

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, 53830 + ... + 55010.

It is an arithmetic number, because the mean of its divisors is an integer number (3756396).

Almost surely, 2^64270020 is an apocalyptic number.

64270020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64270020 is an abundant number, since it is smaller than the sum of its proper divisors (116036988).

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

64270020 is a wasteful number, since it uses less digits than its factorization.

64270020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 64270020 is about 8016.8584869636. The cubic root of 64270020 is about 400.5617523830.

Adding to 64270020 its reverse (2007246), we get a palindrome (66277266).

The spelling of 64270020 in words is "sixty-four million, two hundred seventy thousand, twenty".