770126640 has 160 divisors (see below), whose sum is σ = 2447789760. Its totient is φ = 200245248.

The previous prime is 770126629. The next prime is 770126663. The reversal of 770126640 is 46621077.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1979566 + ... + 1979954.

It is an arithmetic number, because the mean of its divisors is an integer number (15298686).

Almost surely, 2^770126640 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 770126640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223894880).

770126640 is an abundant number, since it is smaller than the sum of its proper divisors (1677663120).

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

770126640 is a wasteful number, since it uses less digits than its factorization.

770126640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 770126640 is about 27751.1556516121. The cubic root of 770126640 is about 916.6158911085.

The spelling of 770126640 in words is "seven hundred seventy million, one hundred twenty-six thousand, six hundred forty".