1540066 has 8 divisors (see below), whose sum is σ = 2520144. Its totient is φ = 700020.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540066 is 6600451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 70003 = 1540066 / (1 + 5 + 4 + 0 + 0 + 6 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34980 + ... + 35023.

It is an arithmetic number, because the mean of its divisors is an integer number (315018).

2^1540066 is an apocalyptic number.

1540066 is a deficient number, since it is larger than the sum of its proper divisors (980078).

1540066 is a wasteful number, since it uses less digits than its factorization.

1540066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70016.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1540066 is about 1240.9939564720. The cubic root of 1540066 is about 115.4816847204.

The spelling of 1540066 in words is "one million, five hundred forty thousand, sixty-six".