642674350 has 24 divisors (see below), whose sum is σ = 1201059288. Its totient is φ = 255847200.

The previous prime is 642674339. The next prime is 642674353. The reversal of 642674350 is 53476246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642674353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19909 + ... + 41008.

It is an arithmetic number, because the mean of its divisors is an integer number (50044137).

Almost surely, 2^642674350 is an apocalyptic number.

642674350 is a deficient number, since it is larger than the sum of its proper divisors (558384938).

642674350 is a wasteful number, since it uses less digits than its factorization.

642674350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61140 (or 61135 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 642674350 is about 25351.0226618178. The cubic root of 642674350 is about 862.9725646705.

The spelling of 642674350 in words is "six hundred forty-two million, six hundred seventy-four thousand, three hundred fifty".