1964497 has 4 divisors (see below), whose sum is σ = 1986660. Its totient is φ = 1942336.

The previous prime is 1964483. The next prime is 1964531. The reversal of 1964497 is 7944691.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 712336 = 1119^2 + 844^2 .

It is not a de Polignac number, because 1964497 - 2¹¹ = 1962449 is a prime.

It is a Duffinian number.

1964497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1964437) 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, 10948 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (496665).

2^1964497 is an apocalyptic number.

It is an amenable number.

1964497 is a deficient number, since it is larger than the sum of its proper divisors (22163).

1964497 is an equidigital number, since it uses as much as digits as its factorization.

1964497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22162.

The product of its digits is 54432, while the sum is 40.

The square root of 1964497 is about 1401.6051512462. The cubic root of 1964497 is about 125.2421333354.

It can be divided in two parts, 19 and 64497, that added together give a square (64516 = 254²).

The spelling of 1964497 in words is "one million, nine hundred sixty-four thousand, four hundred ninety-seven".