64490066 has 8 divisors (see below), whose sum is σ = 101826480. Its totient is φ = 30547908.

The previous prime is 64490059. The next prime is 64490071. The reversal of 64490066 is 66009446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64490066² = 8317937225368712, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 848516 + ... + 848591.

It is an arithmetic number, because the mean of its divisors is an integer number (12728310).

Almost surely, 2^64490066 is an apocalyptic number.

64490066 is a deficient number, since it is larger than the sum of its proper divisors (37336414).

64490066 is a wasteful number, since it uses less digits than its factorization.

64490066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697128.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64490066 is about 8030.5707144636. The cubic root of 64490066 is about 401.0183759093.

The spelling of 64490066 in words is "sixty-four million, four hundred ninety thousand, sixty-six".