40690648 has 16 divisors (see below), whose sum is σ = 77589000. Its totient is φ = 20000256.

The previous prime is 40690633. The next prime is 40690649. The reversal of 40690648 is 84609604.

It is a super-3 number, since 3×40690648³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40690649) 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, 42633 + ... + 43576.

Almost surely, 2^40690648 is an apocalyptic number.

It is an amenable number.

40690648 is a deficient number, since it is larger than the sum of its proper divisors (36898352).

40690648 is a wasteful number, since it uses less digits than its factorization.

40690648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86274 (or 86270 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 40690648 is about 6378.9221660089. The cubic root of 40690648 is about 343.9522874154.

The spelling of 40690648 in words is "forty million, six hundred ninety thousand, six hundred forty-eight".