40632661 has 8 divisors (see below), whose sum is σ = 42536448. Its totient is φ = 38766000.

The previous prime is 40632643. The next prime is 40632667. The reversal of 40632661 is 16623604.

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

It is not a de Polignac number, because 40632661 - 2²¹ = 38535509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40632667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7030 + ... + 11431.

It is an arithmetic number, because the mean of its divisors is an integer number (5317056).

Almost surely, 2^40632661 is an apocalyptic number.

It is an amenable number.

40632661 is a deficient number, since it is larger than the sum of its proper divisors (1903787).

40632661 is a wasteful number, since it uses less digits than its factorization.

40632661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18563.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40632661 is about 6374.3753419453. The cubic root of 40632661 is about 343.7888244413.

It can be divided in two parts, 4063 and 2661, that added together give a square (6724 = 82²).

The spelling of 40632661 in words is "forty million, six hundred thirty-two thousand, six hundred sixty-one".