773369640 has 256 divisors, whose sum is σ = 2682720000. Its totient is φ = 198042624.

The previous prime is 773369599. The next prime is 773369659. The reversal of 773369640 is 46963377.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3377046 + ... + 3377274.

It is an arithmetic number, because the mean of its divisors is an integer number (10479375).

Almost surely, 2^773369640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 773369640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341360000).

773369640 is an abundant number, since it is smaller than the sum of its proper divisors (1909350360).

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

773369640 is a wasteful number, since it uses less digits than its factorization.

773369640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The square root of 773369640 is about 27809.5242677756. The cubic root of 773369640 is about 917.9007112061.

The spelling of 773369640 in words is "seven hundred seventy-three million, three hundred sixty-nine thousand, six hundred forty".