1376964697 has 4 divisors (see below), whose sum is σ = 1377223120. Its totient is φ = 1376706276.

The previous prime is 1376964671. The next prime is 1376964709. The reversal of 1376964697 is 7964696731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7964696731 = 31 ⋅256925701.

It is a cyclic number.

It is not a de Polignac number, because 1376964697 - 2¹⁹ = 1376440409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376964647) 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, 121047 + ... + 131932.

It is an arithmetic number, because the mean of its divisors is an integer number (344305780).

Almost surely, 2^1376964697 is an apocalyptic number.

It is an amenable number.

1376964697 is a deficient number, since it is larger than the sum of its proper divisors (258423).

1376964697 is an equidigital number, since it uses as much as digits as its factorization.

1376964697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258422.

The product of its digits is 10287648, while the sum is 58.

The square root of 1376964697 is about 37107.4749477784. The cubic root of 1376964697 is about 1112.5194231680.

The spelling of 1376964697 in words is "one billion, three hundred seventy-six million, nine hundred sixty-four thousand, six hundred ninety-seven".