1264487 has 8 divisors (see below), whose sum is σ = 1495200. Its totient is φ = 1046304.

The previous prime is 1264451. The next prime is 1264499. The reversal of 1264487 is 7844621.

1264487 = T₄₁₈ + T₄₁₉ + ... + T₄₃₁.

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

It is not a de Polignac number, because 1264487 - 2⁸ = 1264231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2912 + ... + 3317.

It is an arithmetic number, because the mean of its divisors is an integer number (186900).

2^1264487 is an apocalyptic number.

1264487 is a deficient number, since it is larger than the sum of its proper divisors (230713).

1264487 is an equidigital number, since it uses as much as digits as its factorization.

1264487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265.

The product of its digits is 10752, while the sum is 32.

The square root of 1264487 is about 1124.4941084772. The cubic root of 1264487 is about 108.1362877053.

The spelling of 1264487 in words is "one million, two hundred sixty-four thousand, four hundred eighty-seven".