40661526 has 8 divisors (see below), whose sum is σ = 81323064. Its totient is φ = 13553840.

The previous prime is 40661521. The next prime is 40661573. The reversal of 40661526 is 62516604.

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

40661526 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 40661493 and 40661502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661521) 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, 3388455 + ... + 3388466.

It is an arithmetic number, because the mean of its divisors is an integer number (10165383).

Almost surely, 2^40661526 is an apocalyptic number.

40661526 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40661526 is a wasteful number, since it uses less digits than its factorization.

40661526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776926.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40661526 is about 6376.6390834044. The cubic root of 40661526 is about 343.8702131178.

The spelling of 40661526 in words is "forty million, six hundred sixty-one thousand, five hundred twenty-six".