68632477 has 4 divisors (see below), whose sum is σ = 68680060. Its totient is φ = 68584896.

The previous prime is 68632469. The next prime is 68632489. The reversal of 68632477 is 77423686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77423686 = 2 ⋅38711843.

It can be written as a sum of positive squares in 2 ways, for example, as 23755876 + 44876601 = 4874^2 + 6699^2 .

It is a cyclic number.

It is not a de Polignac number, because 68632477 - 2³ = 68632469 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 (68632457) 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, 21558 + ... + 24535.

It is an arithmetic number, because the mean of its divisors is an integer number (17170015).

Almost surely, 2^68632477 is an apocalyptic number.

It is an amenable number.

68632477 is a deficient number, since it is larger than the sum of its proper divisors (47583).

68632477 is a wasteful number, since it uses less digits than its factorization.

68632477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47582.

The product of its digits is 338688, while the sum is 43.

The square root of 68632477 is about 8284.4720411140. The cubic root of 68632477 is about 409.4270740586.

The spelling of 68632477 in words is "sixty-eight million, six hundred thirty-two thousand, four hundred seventy-seven".