770499840 has 576 divisors, whose sum is σ = 3019887360. Its totient is φ = 165150720.

The previous prime is 770499833. The next prime is 770499841. The reversal of 770499840 is 48994077.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 770499840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770499841) 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, 20824302 + ... + 20824338.

It is an arithmetic number, because the mean of its divisors is an integer number (5242860).

Almost surely, 2^770499840 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 770499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509943680).

770499840 is an abundant number, since it is smaller than the sum of its proper divisors (2249387520).

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

770499840 is a wasteful number, since it uses less digits than its factorization.

770499840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 770499840 is about 27757.8788814996. The cubic root of 770499840 is about 916.7639298815.

The spelling of 770499840 in words is "seven hundred seventy million, four hundred ninety-nine thousand, eight hundred forty".