1260651 has 16 divisors (see below), whose sum is σ = 1937664. Its totient is φ = 714144.

The previous prime is 1260643. The next prime is 1260661. The reversal of 1260651 is 1560621.

It is a happy number.

It is not a de Polignac number, because 1260651 - 2³ = 1260643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1260651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1260641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3460 + ... + 3806.

It is an arithmetic number, because the mean of its divisors is an integer number (121104).

2^1260651 is an apocalyptic number.

1260651 is a deficient number, since it is larger than the sum of its proper divisors (677013).

1260651 is a wasteful number, since it uses less digits than its factorization.

1260651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1260651 is about 1122.7871570338. The cubic root of 1260651 is about 108.0268280402.

1260651 divided by its sum of digits (21) gives a triangular number (60031 = T₃₄₆).

The spelling of 1260651 in words is "one million, two hundred sixty thousand, six hundred fifty-one".