77369663 has 4 divisors (see below), whose sum is σ = 88422480. Its totient is φ = 66316848.

The previous prime is 77369641. The next prime is 77369681. The reversal of 77369663 is 36696377.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77369663 - 2¹⁰ = 77368639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77369683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5526398 + ... + 5526411.

It is an arithmetic number, because the mean of its divisors is an integer number (22105620).

Almost surely, 2^77369663 is an apocalyptic number.

77369663 is a deficient number, since it is larger than the sum of its proper divisors (11052817).

77369663 is a wasteful number, since it uses less digits than its factorization.

77369663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052816.

The product of its digits is 857304, while the sum is 47.

The square root of 77369663 is about 8796.0026716685. The cubic root of 77369663 is about 426.1118072959. Note that the first 3 decimals are identical.

Subtracting from 77369663 its sum of digits (47), we obtain a square (77369616 = 8796²).

The spelling of 77369663 in words is "seventy-seven million, three hundred sixty-nine thousand, six hundred sixty-three".