77320169 has 8 divisors (see below), whose sum is σ = 80037120. Its totient is φ = 74617200.

The previous prime is 77320153. The next prime is 77320183. The reversal of 77320169 is 96102377.

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 77320169 - 2⁴ = 77320153 is a prime.

It is a super-2 number, since 2×77320169² = 11956817068377122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77320109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8459 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (10004640).

Almost surely, 2^77320169 is an apocalyptic number.

It is an amenable number.

77320169 is a deficient number, since it is larger than the sum of its proper divisors (2716951).

77320169 is a wasteful number, since it uses less digits than its factorization.

77320169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 77320169 is about 8793.1887845082. The cubic root of 77320169 is about 426.0209255225.

The spelling of 77320169 in words is "seventy-seven million, three hundred twenty thousand, one hundred sixty-nine".