1374764647 has 4 divisors (see below), whose sum is σ = 1375096096. Its totient is φ = 1374433200.

The previous prime is 1374764621. The next prime is 1374764663. The reversal of 1374764647 is 7464674731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1374764647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1374764647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374774647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159423 + ... + 167824.

It is an arithmetic number, because the mean of its divisors is an integer number (343774024).

Almost surely, 2^1374764647 is an apocalyptic number.

1374764647 is a deficient number, since it is larger than the sum of its proper divisors (331449).

1374764647 is an equidigital number, since it uses as much as digits as its factorization.

1374764647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331448.

The product of its digits is 2370816, while the sum is 49.

The square root of 1374764647 is about 37077.8188004634. The cubic root of 1374764647 is about 1111.9265967691.

The spelling of 1374764647 in words is "one billion, three hundred seventy-four million, seven hundred sixty-four thousand, six hundred forty-seven".