642062685 has 64 divisors (see below), whose sum is σ = 1144958976. Its totient is φ = 304646400.

The previous prime is 642062683. The next prime is 642062711. The reversal of 642062685 is 586260246.

It is not a de Polignac number, because 642062685 - 2¹ = 642062683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642062683) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2369100 + ... + 2369370.

It is an arithmetic number, because the mean of its divisors is an integer number (17889984).

Almost surely, 2^642062685 is an apocalyptic number.

It is an amenable number.

642062685 is a deficient number, since it is larger than the sum of its proper divisors (502896291).

642062685 is a wasteful number, since it uses less digits than its factorization.

642062685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 642062685 is about 25338.9558782520. The cubic root of 642062685 is about 862.6986998623.

The spelling of 642062685 in words is "six hundred forty-two million, sixty-two thousand, six hundred eighty-five".