40697806 has 4 divisors (see below), whose sum is σ = 61046712. Its totient is φ = 20348902.

The previous prime is 40697801. The next prime is 40697819. The reversal of 40697806 is 60879604.

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

It is a super-2 number, since 2×40697806² = 3312622826427272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40697801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10174450 + ... + 10174453.

It is an arithmetic number, because the mean of its divisors is an integer number (15261678).

Almost surely, 2^40697806 is an apocalyptic number.

40697806 is a deficient number, since it is larger than the sum of its proper divisors (20348906).

40697806 is a wasteful number, since it uses less digits than its factorization.

40697806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20348905.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 40697806 is about 6379.4832079096. The cubic root of 40697806 is about 343.9724547531.

The spelling of 40697806 in words is "forty million, six hundred ninety-seven thousand, eight hundred six".