40654651 has 4 divisors (see below), whose sum is σ = 41600152. Its totient is φ = 39709152.

The previous prime is 40654643. The next prime is 40654673. The reversal of 40654651 is 15645604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40654651 - 2³ = 40654643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40654451) 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, 472686 + ... + 472771.

It is an arithmetic number, because the mean of its divisors is an integer number (10400038).

Almost surely, 2^40654651 is an apocalyptic number.

40654651 is a deficient number, since it is larger than the sum of its proper divisors (945501).

40654651 is an equidigital number, since it uses as much as digits as its factorization.

40654651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945500.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40654651 is about 6376.0999835323. The cubic root of 40654651 is about 343.8508316435.

The spelling of 40654651 in words is "forty million, six hundred fifty-four thousand, six hundred fifty-one".