64069766 has 16 divisors (see below), whose sum is σ = 100605024. Its totient is φ = 30543744.

The previous prime is 64069763. The next prime is 64069771. The reversal of 64069766 is 66796046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64069763) by changing a digit.

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, 13436 + ... + 17568.

It is an arithmetic number, because the mean of its divisors is an integer number (6287814).

Almost surely, 2^64069766 is an apocalyptic number.

64069766 is a deficient number, since it is larger than the sum of its proper divisors (36535258).

64069766 is a wasteful number, since it uses less digits than its factorization.

64069766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 64069766 is about 8004.3591873429. The cubic root of 64069766 is about 400.1452930518.

The spelling of 64069766 in words is "sixty-four million, sixty-nine thousand, seven hundred sixty-six".