67765563 has 12 divisors (see below), whose sum is σ = 98090928. Its totient is φ = 45081360.

The previous prime is 67765559. The next prime is 67765589. The reversal of 67765563 is 36556776.

It is not a de Polignac number, because 67765563 - 2² = 67765559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67765513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3348 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (8174244).

Almost surely, 2^67765563 is an apocalyptic number.

67765563 is a deficient number, since it is larger than the sum of its proper divisors (30325365).

67765563 is a wasteful number, since it uses less digits than its factorization.

67765563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15954 (or 15951 counting only the distinct ones).

The product of its digits is 793800, while the sum is 45.

The square root of 67765563 is about 8231.9841472151. The cubic root of 67765563 is about 407.6959059034.

The spelling of 67765563 in words is "sixty-seven million, seven hundred sixty-five thousand, five hundred sixty-three".