64801982 has 32 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 27246240.

The previous prime is 64801967. The next prime is 64801999. The reversal of 64801982 is 28910846.

It is a super-2 number, since 2×64801982² = 8398593742256648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271019 + ... + 271257.

It is an arithmetic number, because the mean of its divisors is an integer number (3538080).

Almost surely, 2^64801982 is an apocalyptic number.

64801982 is a deficient number, since it is larger than the sum of its proper divisors (48416578).

64801982 is a wasteful number, since it uses less digits than its factorization.

64801982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 64801982 is about 8049.9678260227. The cubic root of 64801982 is about 401.6638651190.

The spelling of 64801982 in words is "sixty-four million, eight hundred one thousand, nine hundred eighty-two".