772001681 has 8 divisors (see below), whose sum is σ = 850523328. Its totient is φ = 694870000.

The previous prime is 772001651. The next prime is 772001687. The reversal of 772001681 is 186100277.

772001681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 772001681 - 2¹⁴ = 771985297 is a prime.

It is a super-2 number, since 2×772001681² = 1191973190933651522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772001687) 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, 346325 + ... + 348546.

It is an arithmetic number, because the mean of its divisors is an integer number (106315416).

Almost surely, 2^772001681 is an apocalyptic number.

It is an amenable number.

772001681 is a deficient number, since it is larger than the sum of its proper divisors (78521647).

772001681 is a wasteful number, since it uses less digits than its factorization.

772001681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694983.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 772001681 is about 27784.9182291401. The cubic root of 772001681 is about 917.3591885213.

The spelling of 772001681 in words is "seven hundred seventy-two million, one thousand, six hundred eighty-one".