1247670 has 32 divisors (see below), whose sum is σ = 3327840. Its totient is φ = 332640.

The previous prime is 1247663. The next prime is 1247693. The reversal of 1247670 is 767421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2041 + ... + 2580.

It is an arithmetic number, because the mean of its divisors is an integer number (103995).

2^1247670 is an apocalyptic number.

1247670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1247670 is an abundant number, since it is smaller than the sum of its proper divisors (2080170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1247670 is a wasteful number, since it uses less digits than its factorization.

1247670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1247670 is about 1116.9914950437. The cubic root of 1247670 is about 107.6547617676.

Subtracting from 1247670 its reverse (767421), we obtain a square (480249 = 693²).

The spelling of 1247670 in words is "one million, two hundred forty-seven thousand, six hundred seventy".