764730 has 48 divisors (see below), whose sum is σ = 2063880. Its totient is φ = 196224.

The previous prime is 764723. The next prime is 764783. The reversal of 764730 is 37467.

764730 = T₂₁₅ + T₂₁₆ + ... + T₂₄₃.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 23409 = 861^2 + 153^2 .

It is a junction number, because it is equal to n+sod(n) for n = 764694 and 764703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2464 + ... + 2756.

2⁷⁶⁴⁷³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031940).

764730 is an abundant number, since it is smaller than the sum of its proper divisors (1299150).

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

764730 is a wasteful number, since it uses less digits than its factorization.

764730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 764730 is about 874.4884218788. The cubic root of 764730 is about 91.4469817372.

The spelling of 764730 in words is "seven hundred sixty-four thousand, seven hundred thirty".