64950890 has 16 divisors (see below), whose sum is σ = 120683520. Its totient is φ = 25142160.

The previous prime is 64950889. The next prime is 64950913. The reversal of 64950890 is 9805946.

It is a super-2 number, since 2×64950890² = 8437236223584200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104450 + ... + 105069.

It is an arithmetic number, because the mean of its divisors is an integer number (7542720).

Almost surely, 2^64950890 is an apocalyptic number.

64950890 is a deficient number, since it is larger than the sum of its proper divisors (55732630).

64950890 is a wasteful number, since it uses less digits than its factorization.

64950890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209557.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 64950890 is about 8059.2114998925. The cubic root of 64950890 is about 401.9712899143.

The spelling of 64950890 in words is "sixty-four million, nine hundred fifty thousand, eight hundred ninety".