77082669 has 6 divisors (see below), whose sum is σ = 111341646. Its totient is φ = 51388440.

The previous prime is 77082653. The next prime is 77082701. The reversal of 77082669 is 96628077.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57608100 + 19474569 = 7590^2 + 4413^2 .

It is not a de Polignac number, because 77082669 - 2⁴ = 77082653 is a prime.

It is a super-2 number, since 2×77082669² = 11883475720327122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77082619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4282362 + ... + 4282379.

It is an arithmetic number, because the mean of its divisors is an integer number (18556941).

Almost surely, 2^77082669 is an apocalyptic number.

It is an amenable number.

77082669 is a deficient number, since it is larger than the sum of its proper divisors (34258977).

77082669 is a wasteful number, since it uses less digits than its factorization.

77082669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564747 (or 8564744 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 77082669 is about 8779.6736271914. The cubic root of 77082669 is about 425.5842833349.

The spelling of 77082669 in words is "seventy-seven million, eighty-two thousand, six hundred sixty-nine".