786364640 has 48 divisors (see below), whose sum is σ = 1859524128. Its totient is φ = 314251776.

The previous prime is 786364633. The next prime is 786364643. The reversal of 786364640 is 46463687.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 786364591 and 786364600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786364643) 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, 269429 + ... + 272331.

It is an arithmetic number, because the mean of its divisors is an integer number (38740086).

Almost surely, 2^786364640 is an apocalyptic number.

It is an amenable number.

786364640 is an abundant number, since it is smaller than the sum of its proper divisors (1073159488).

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

786364640 is a wasteful number, since it uses less digits than its factorization.

786364640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611 (or 4603 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 786364640 is about 28042.1939227301. The cubic root of 786364640 is about 923.0133706389.

The spelling of 786364640 in words is "seven hundred eighty-six million, three hundred sixty-four thousand, six hundred forty".