40723667 has 4 divisors (see below), whose sum is σ = 41590176. Its totient is φ = 39857160.

The previous prime is 40723651. The next prime is 40723673. The reversal of 40723667 is 76632704.

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

It is a cyclic number.

It is not a de Polignac number, because 40723667 - 2⁴ = 40723651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40725667) 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, 433184 + ... + 433277.

It is an arithmetic number, because the mean of its divisors is an integer number (10397544).

Almost surely, 2^40723667 is an apocalyptic number.

40723667 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

40723667 is a deficient number, since it is larger than the sum of its proper divisors (866509).

40723667 is an equidigital number, since it uses as much as digits as its factorization.

40723667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866508.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 40723667 is about 6381.5097743402. The cubic root of 40723667 is about 344.0452972395.

The spelling of 40723667 in words is "forty million, seven hundred twenty-three thousand, six hundred sixty-seven".