1340697267 has 48 divisors (see below), whose sum is σ = 2405894400. Its totient is φ = 700526016.

The previous prime is 1340697263. The next prime is 1340697271. The reversal of 1340697267 is 7627960431.

It is an interprime number because it is at equal distance from previous prime (1340697263) and next prime (1340697271).

It is not a de Polignac number, because 1340697267 - 2² = 1340697263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340697263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79984 + ... + 95282.

It is an arithmetic number, because the mean of its divisors is an integer number (50122800).

Almost surely, 2^1340697267 is an apocalyptic number.

1340697267 is a deficient number, since it is larger than the sum of its proper divisors (1065197133).

1340697267 is a wasteful number, since it uses less digits than its factorization.

1340697267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432 (or 15429 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 1340697267 is about 36615.5331382734. The cubic root of 1340697267 is about 1102.6649618189.

It can be divided in two parts, 1340697 and 267, that added together give a square (1340964 = 1158²).

The spelling of 1340697267 in words is "one billion, three hundred forty million, six hundred ninety-seven thousand, two hundred sixty-seven".