770661552 has 80 divisors (see below), whose sum is σ = 2116793088. Its totient is φ = 241063680.

The previous prime is 770661547. The next prime is 770661571. The reversal of 770661552 is 255166077.

It is a self number, because there is not a number n which added to its sum of digits gives 770661552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51927 + ... + 65097.

Almost surely, 2^770661552 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 770661552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058396544).

770661552 is an abundant number, since it is smaller than the sum of its proper divisors (1346131536).

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

770661552 is a wasteful number, since it uses less digits than its factorization.

770661552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13258 (or 13252 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 770661552 is about 27760.7916313638. The cubic root of 770661552 is about 916.8280619987.

The spelling of 770661552 in words is "seven hundred seventy million, six hundred sixty-one thousand, five hundred fifty-two".