64619706 has 16 divisors (see below), whose sum is σ = 129396384. Its totient is φ = 21513744.

The previous prime is 64619701. The next prime is 64619729. The reversal of 64619706 is 60791646.

64619706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64619701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801 + ... + 11396.

It is an arithmetic number, because the mean of its divisors is an integer number (8087274).

Almost surely, 2^64619706 is an apocalyptic number.

64619706 is an abundant number, since it is smaller than the sum of its proper divisors (64776678).

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

64619706 is a wasteful number, since it uses less digits than its factorization.

64619706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13085.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 64619706 is about 8038.6383175262. The cubic root of 64619706 is about 401.2869093870.

The spelling of 64619706 in words is "sixty-four million, six hundred nineteen thousand, seven hundred six".