68987207 has 4 divisors (see below), whose sum is σ = 73045296. Its totient is φ = 64929120.

The previous prime is 68987161. The next prime is 68987239. The reversal of 68987207 is 70278986.

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

It is not a de Polignac number, because 68987207 - 2²⁰ = 67938631 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 (68987407) 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, 2029019 + ... + 2029052.

It is an arithmetic number, because the mean of its divisors is an integer number (18261324).

Almost surely, 2^68987207 is an apocalyptic number.

68987207 is a deficient number, since it is larger than the sum of its proper divisors (4058089).

68987207 is a wasteful number, since it uses less digits than its factorization.

68987207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058088.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 68987207 is about 8305.8537791127. The cubic root of 68987207 is about 410.1312429335.

The spelling of 68987207 in words is "sixty-eight million, nine hundred eighty-seven thousand, two hundred seven".