40571697 has 4 divisors (see below), whose sum is σ = 54095600. Its totient is φ = 27047796.

The previous prime is 40571677. The next prime is 40571711. The reversal of 40571697 is 79617504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40571697 - 2⁷ = 40571569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40571677) 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, 6761947 + ... + 6761952.

It is an arithmetic number, because the mean of its divisors is an integer number (13523900).

Almost surely, 2^40571697 is an apocalyptic number.

It is an amenable number.

40571697 is a deficient number, since it is larger than the sum of its proper divisors (13523903).

40571697 is a wasteful number, since it uses less digits than its factorization.

40571697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13523902.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 40571697 is about 6369.5915881632. The cubic root of 40571697 is about 343.6168016393.

The spelling of 40571697 in words is "forty million, five hundred seventy-one thousand, six hundred ninety-seven".