1064666647 has 32 divisors (see below), whose sum is σ = 1233792000. Its totient is φ = 909767040.

The previous prime is 1064666641. The next prime is 1064666651. The reversal of 1064666647 is 7466664601.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1064666647 - 2¹¹ = 1064664599 is a prime.

It is a super-2 number, since 2×1064666647² = 2267030138468445218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1064666597 and 1064666606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064666641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2091429 + ... + 2091937.

It is an arithmetic number, because the mean of its divisors is an integer number (38556000).

Almost surely, 2^1064666647 is an apocalyptic number.

1064666647 is a deficient number, since it is larger than the sum of its proper divisors (169125353).

1064666647 is a wasteful number, since it uses less digits than its factorization.

1064666647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 1064666647 is about 32629.2299480083. The cubic root of 1064666647 is about 1021.1069128413.

The spelling of 1064666647 in words is "one billion, sixty-four million, six hundred sixty-six thousand, six hundred forty-seven".