1397064760 has 256 divisors, whose sum is σ = 4154250240. Its totient is φ = 410296320.

The previous prime is 1397064751. The next prime is 1397064769. The reversal of 1397064760 is 674607931.

It is an interprime number because it is at equal distance from previous prime (1397064751) and next prime (1397064769).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397064769) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6621055 + ... + 6621265.

It is an arithmetic number, because the mean of its divisors is an integer number (16227540).

Almost surely, 2^1397064760 is an apocalyptic number.

1397064760 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 1397064760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2077125120).

1397064760 is an abundant number, since it is smaller than the sum of its proper divisors (2757185480).

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

1397064760 is a wasteful number, since it uses less digits than its factorization.

1397064760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 1397064760 is about 37377.3294926216. The cubic root of 1397064760 is about 1117.9065806481.

The spelling of 1397064760 in words is "one billion, three hundred ninety-seven million, sixty-four thousand, seven hundred sixty".