776601 has 24 divisors (see below), whose sum is σ = 1340640. Its totient is φ = 443016.

The previous prime is 776599. The next prime is 776627. The reversal of 776601 is 106677.

It is not a de Polignac number, because 776601 - 2¹ = 776599 is a prime.

It is a super-2 number, since 2×776601² = 1206218226402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

776601 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 776601.

It is not an unprimeable number, because it can be changed into a prime (776651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1030 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2⁷⁷⁶⁶⁰¹ is an apocalyptic number.

776601 is the 441-st decagonal number.

It is an amenable number.

776601 is a deficient number, since it is larger than the sum of its proper divisors (564039).

776601 is a wasteful number, since it uses less digits than its factorization.

776601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 776601 is about 881.2496808510. The cubic root of 776601 is about 91.9177352209.

The spelling of 776601 in words is "seven hundred seventy-six thousand, six hundred one".