1375704640 has 56 divisors (see below), whose sum is σ = 3301788672. Its totient is φ = 545932800.

The previous prime is 1375704613. The next prime is 1375704641. The reversal of 1375704640 is 464075731.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1375704640.

It is not an unprimeable number, because it can be changed into a prime (1375704641) 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, 23715 + ... + 57565.

It is an arithmetic number, because the mean of its divisors is an integer number (58960512).

Almost surely, 2^1375704640 is an apocalyptic number.

1375704640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375704640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650894336).

1375704640 is an abundant number, since it is smaller than the sum of its proper divisors (1926084032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375704640 is a wasteful number, since it uses less digits than its factorization.

1375704640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33995 (or 33985 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 1375704640 is about 37090.4925823317. The cubic root of 1375704640 is about 1112.1799650073.

The spelling of 1375704640 in words is "one billion, three hundred seventy-five million, seven hundred four thousand, six hundred forty".