64889946 has 48 divisors (see below), whose sum is σ = 160056000. Its totient is φ = 18807360.

The previous prime is 64889917. The next prime is 64889963. The reversal of 64889946 is 64998846.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64889892 and 64889901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2571 + ... + 11678.

It is an arithmetic number, because the mean of its divisors is an integer number (3334500).

Almost surely, 2^64889946 is an apocalyptic number.

64889946 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64889946 is an abundant number, since it is smaller than the sum of its proper divisors (95166054).

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

64889946 is a wasteful number, since it uses less digits than its factorization.

64889946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14291 (or 14288 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 64889946 is about 8055.4295974827. The cubic root of 64889946 is about 401.8455261543.

Subtracting 64889946 from its reverse (64998846), we obtain a square (108900 = 330²).

The spelling of 64889946 in words is "sixty-four million, eight hundred eighty-nine thousand, nine hundred forty-six".