964611647 has 4 divisors (see below), whose sum is σ = 987044520. Its totient is φ = 942178776.

The previous prime is 964611643. The next prime is 964611649. The reversal of 964611647 is 746116469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746116469 = 7 ⋅106588067.

It is a cyclic number.

It is not a de Polignac number, because 964611647 - 2² = 964611643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 964611598 and 964611607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (964611643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11216372 + ... + 11216457.

It is an arithmetic number, because the mean of its divisors is an integer number (246761130).

Almost surely, 2^964611647 is an apocalyptic number.

964611647 is a deficient number, since it is larger than the sum of its proper divisors (22432873).

964611647 is a wasteful number, since it uses less digits than its factorization.

964611647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22432872.

The product of its digits is 217728, while the sum is 44.

The square root of 964611647 is about 31058.1977423031. The cubic root of 964611647 is about 988.0619319933.

The spelling of 964611647 in words is "nine hundred sixty-four million, six hundred eleven thousand, six hundred forty-seven".