40634686 has 4 divisors (see below), whose sum is σ = 60952032. Its totient is φ = 20317342.

The previous prime is 40634651. The next prime is 40634689. The reversal of 40634686 is 68643604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40634689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10158670 + ... + 10158673.

It is an arithmetic number, because the mean of its divisors is an integer number (15238008).

Almost surely, 2^40634686 is an apocalyptic number.

40634686 is a deficient number, since it is larger than the sum of its proper divisors (20317346).

40634686 is a wasteful number, since it uses less digits than its factorization.

40634686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20317345.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 40634686 is about 6374.5341790597. The cubic root of 40634686 is about 343.7945354530.

The spelling of 40634686 in words is "forty million, six hundred thirty-four thousand, six hundred eighty-six".