1940667 has 4 divisors (see below), whose sum is σ = 2587560. Its totient is φ = 1293776.

The previous prime is 1940663. The next prime is 1940683. The reversal of 1940667 is 7660491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7660491 = 3 ⋅2553497.

It is a cyclic number.

It is not a de Polignac number, because 1940667 - 2² = 1940663 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1940663) 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, 323442 + ... + 323447.

It is an arithmetic number, because the mean of its divisors is an integer number (646890).

2^1940667 is an apocalyptic number.

1940667 is a deficient number, since it is larger than the sum of its proper divisors (646893).

1940667 is an equidigital number, since it uses as much as digits as its factorization.

1940667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646892.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1940667 is about 1393.0782461872. The cubic root of 1940667 is about 124.7336622500.

Subtracting from 1940667 its product of nonzero digits (9072), we obtain a triangular number (1931595 = T₁₉₆₅).

The spelling of 1940667 in words is "one million, nine hundred forty thousand, six hundred sixty-seven".