40684965 has 16 divisors (see below), whose sum is σ = 65200128. Its totient is φ = 21663936.

The previous prime is 40684949. The next prime is 40684981. The reversal of 40684965 is 56948604.

It is an interprime number because it is at equal distance from previous prime (40684949) and next prime (40684981).

It is not a de Polignac number, because 40684965 - 2⁴ = 40684949 is a prime.

It is a super-3 number, since 3×40684965³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9564 + ... + 13146.

It is an arithmetic number, because the mean of its divisors is an integer number (4075008).

Almost surely, 2^40684965 is an apocalyptic number.

It is an amenable number.

40684965 is a deficient number, since it is larger than the sum of its proper divisors (24515163).

40684965 is a wasteful number, since it uses less digits than its factorization.

40684965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 40684965 is about 6378.4766990246. The cubic root of 40684965 is about 343.9362741384.

The spelling of 40684965 in words is "forty million, six hundred eighty-four thousand, nine hundred sixty-five".