1365713720 has 64 divisors (see below), whose sum is σ = 3527470080. Its totient is φ = 466160256.

The previous prime is 1365713719. The next prime is 1365713737. The reversal of 1365713720 is 273175631.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52817 + ... + 74303.

It is an arithmetic number, because the mean of its divisors is an integer number (55116720).

Almost surely, 2^1365713720 is an apocalyptic number.

1365713720 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 1365713720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763735040).

1365713720 is an abundant number, since it is smaller than the sum of its proper divisors (2161756360).

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

1365713720 is a wasteful number, since it uses less digits than its factorization.

1365713720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21732 (or 21728 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 1365713720 is about 36955.5641277467. The cubic root of 1365713720 is about 1109.4810549353.

The spelling of 1365713720 in words is "one billion, three hundred sixty-five million, seven hundred thirteen thousand, seven hundred twenty".