64342020 has 24 divisors (see below), whose sum is σ = 180157824. Its totient is φ = 17157856.

The previous prime is 64342009. The next prime is 64342099. The reversal of 64342020 is 2024346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536124 + ... + 536243.

It is an arithmetic number, because the mean of its divisors is an integer number (7506576).

Almost surely, 2^64342020 is an apocalyptic number.

64342020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64342020 is an abundant number, since it is smaller than the sum of its proper divisors (115815804).

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

64342020 is a wasteful number, since it uses less digits than its factorization.

64342020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072379 (or 1072377 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 64342020 is about 8021.3477670526. The cubic root of 64342020 is about 400.7112761326.

Adding to 64342020 its reverse (2024346), we get a palindrome (66366366).

The spelling of 64342020 in words is "sixty-four million, three hundred forty-two thousand, twenty".