770647381 has 8 divisors (see below), whose sum is σ = 881438720. Its totient is φ = 660030768.

The previous prime is 770647337. The next prime is 770647403. The reversal of 770647381 is 183746077.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 770647381 - 2⁷ = 770647253 is a prime.

It is a super-2 number, since 2×770647381² = 1187794771684318322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770647081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34086 + ... + 51991.

It is an arithmetic number, because the mean of its divisors is an integer number (110179840).

Almost surely, 2^770647381 is an apocalyptic number.

It is an amenable number.

770647381 is a deficient number, since it is larger than the sum of its proper divisors (110791339).

770647381 is a wasteful number, since it uses less digits than its factorization.

770647381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87363.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 770647381 is about 27760.5363961145. The cubic root of 770647381 is about 916.8224423896.

The spelling of 770647381 in words is "seven hundred seventy million, six hundred forty-seven thousand, three hundred eighty-one".