40646535 has 16 divisors (see below), whose sum is σ = 66793056. Its totient is φ = 21091968.

The previous prime is 40646533. The next prime is 40646561. The reversal of 40646535 is 53564604.

It is not a de Polignac number, because 40646535 - 2¹ = 40646533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40646496 and 40646505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40646531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36064 + ... + 37173.

It is an arithmetic number, because the mean of its divisors is an integer number (4174566).

Almost surely, 2^40646535 is an apocalyptic number.

40646535 is a deficient number, since it is larger than the sum of its proper divisors (26146521).

40646535 is a wasteful number, since it uses less digits than its factorization.

40646535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73282.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 40646535 is about 6375.4635125613. The cubic root of 40646535 is about 343.8279488243.

The spelling of 40646535 in words is "forty million, six hundred forty-six thousand, five hundred thirty-five".