40665530 has 32 divisors (see below), whose sum is σ = 79320384. Its totient is φ = 14950656.

The previous prime is 40665523. The next prime is 40665551. The reversal of 40665530 is 3556604.

It is a junction number, because it is equal to n+sod(n) for n = 40665493 and 40665502.

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, 4529 + ... + 10091.

It is an arithmetic number, because the mean of its divisors is an integer number (2478762).

Almost surely, 2^40665530 is an apocalyptic number.

40665530 is a deficient number, since it is larger than the sum of its proper divisors (38654854).

40665530 is a wasteful number, since it uses less digits than its factorization.

40665530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 40665530 is about 6376.9530341692. The cubic root of 40665530 is about 343.8814998818.

The spelling of 40665530 in words is "forty million, six hundred sixty-five thousand, five hundred thirty".