1964564 has 12 divisors (see below), whose sum is σ = 3929184. Its totient is φ = 841944.

The previous prime is 1964561. The next prime is 1964569. The reversal of 1964564 is 4654691.

1964564 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964561) 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, 35054 + ... + 35109.

It is an arithmetic number, because the mean of its divisors is an integer number (327432).

2^1964564 is an apocalyptic number.

1964564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1964564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1964564 is a wasteful number, since it uses less digits than its factorization.

1964564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70174 (or 70172 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 1964564 is about 1401.6290522103. The cubic root of 1964564 is about 125.2435571312.

The spelling of 1964564 in words is "one million, nine hundred sixty-four thousand, five hundred sixty-four".