1964897 has 4 divisors (see below), whose sum is σ = 2143536. Its totient is φ = 1786260.

The previous prime is 1964887. The next prime is 1964899. The reversal of 1964897 is 7984691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1964897 - 2⁴ = 1964881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1964899) 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, 89303 + ... + 89324.

It is an arithmetic number, because the mean of its divisors is an integer number (535884).

2^1964897 is an apocalyptic number.

It is an amenable number.

1964897 is a deficient number, since it is larger than the sum of its proper divisors (178639).

1964897 is a wasteful number, since it uses less digits than its factorization.

1964897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178638.

The product of its digits is 108864, while the sum is 44.

The square root of 1964897 is about 1401.7478375229. The cubic root of 1964897 is about 125.2506331284.

Multiplying 1964897 by its sum of digits (44), we get a palindrome (86455468).

The spelling of 1964897 in words is "one million, nine hundred sixty-four thousand, eight hundred ninety-seven".