1540463 has 4 divisors (see below), whose sum is σ = 1621560. Its totient is φ = 1459368.

The previous prime is 1540453. The next prime is 1540477. The reversal of 1540463 is 3640451.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1540463 - 2⁴ = 1540447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540403) 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, 40520 + ... + 40557.

It is an arithmetic number, because the mean of its divisors is an integer number (405390).

2^1540463 is an apocalyptic number.

1540463 is a deficient number, since it is larger than the sum of its proper divisors (81097).

1540463 is an equidigital number, since it uses as much as digits as its factorization.

1540463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81096.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1540463 is about 1241.1538985960. The cubic root of 1540463 is about 115.4916068687.

The spelling of 1540463 in words is "one million, five hundred forty thousand, four hundred sixty-three".