40646677 has 8 divisors (see below), whose sum is σ = 43557696. Its totient is φ = 37793472.

The previous prime is 40646663. The next prime is 40646687. The reversal of 40646677 is 77664604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40646677 - 2¹⁹ = 40122389 is a prime.

It is a super-2 number, since 2×40646677² = 3304304702284658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40646647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12993 + ... + 15814.

It is an arithmetic number, because the mean of its divisors is an integer number (5444712).

Almost surely, 2^40646677 is an apocalyptic number.

It is an amenable number.

40646677 is a deficient number, since it is larger than the sum of its proper divisors (2911019).

40646677 is a wasteful number, since it uses less digits than its factorization.

40646677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28907.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 40646677 is about 6375.4746489967. The cubic root of 40646677 is about 343.8283492153.

The spelling of 40646677 in words is "forty million, six hundred forty-six thousand, six hundred seventy-seven".