642367654 has 8 divisors (see below), whose sum is σ = 964762848. Its totient is φ = 320780040.

The previous prime is 642367639. The next prime is 642367679. The reversal of 642367654 is 456763246.

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

It is a self number, because there is not a number n which added to its sum of digits gives 642367654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199902 + ... + 203089.

It is an arithmetic number, because the mean of its divisors is an integer number (120595356).

Almost surely, 2^642367654 is an apocalyptic number.

642367654 is a deficient number, since it is larger than the sum of its proper divisors (322395194).

642367654 is a wasteful number, since it uses less digits than its factorization.

642367654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403790.

The product of its digits is 725760, while the sum is 43.

The square root of 642367654 is about 25344.9729532308. The cubic root of 642367654 is about 862.8352673770.

The spelling of 642367654 in words is "six hundred forty-two million, three hundred sixty-seven thousand, six hundred fifty-four".