1264746671 has 8 divisors (see below), whose sum is σ = 1340589600. Its totient is φ = 1189064448.

The previous prime is 1264746631. The next prime is 1264746673. The reversal of 1264746671 is 1766474621.

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

It is a cyclic number.

It is not a de Polignac number, because 1264746671 - 2⁶ = 1264746607 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 (1264746673) 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, 23771 + ... + 55628.

It is an arithmetic number, because the mean of its divisors is an integer number (167573700).

Almost surely, 2^1264746671 is an apocalyptic number.

1264746671 is a deficient number, since it is larger than the sum of its proper divisors (75842929).

1264746671 is an equidigital number, since it uses as much as digits as its factorization.

1264746671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80353.

The product of its digits is 338688, while the sum is 44.

The square root of 1264746671 is about 35563.2770002991. The cubic root of 1264746671 is about 1081.4368937252.

The spelling of 1264746671 in words is "one billion, two hundred sixty-four million, seven hundred forty-six thousand, six hundred seventy-one".