770217444 has 96 divisors (see below), whose sum is σ = 2070118400. Its totient is φ = 247393440.

The previous prime is 770217391. The next prime is 770217449. The reversal of 770217444 is 444712077.

It is a super-2 number, since 2×770217444² = 1186469822083786272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 770217399 and 770217408.

It is not an unprimeable number, because it can be changed into a prime (770217449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1268589 + ... + 1269195.

Almost surely, 2^770217444 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 770217444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1035059200).

770217444 is an abundant number, since it is smaller than the sum of its proper divisors (1299900956).

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

770217444 is a wasteful number, since it uses less digits than its factorization.

770217444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 36.

The square root of 770217444 is about 27752.7916433645. The cubic root of 770217444 is about 916.6519151051.

It can be divided in two parts, 770217 and 444, that added together give a triangular number (770661 = T₁₂₄₁).

The spelling of 770217444 in words is "seven hundred seventy million, two hundred seventeen thousand, four hundred forty-four".