642526088 has 64 divisors (see below), whose sum is σ = 1318464000. Its totient is φ = 292723200.

The previous prime is 642526069. The next prime is 642526123. The reversal of 642526088 is 880625246.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293783 + ... + 295961.

It is an arithmetic number, because the mean of its divisors is an integer number (20601000).

Almost surely, 2^642526088 is an apocalyptic number.

It is an amenable number.

642526088 is an abundant number, since it is smaller than the sum of its proper divisors (675937912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642526088 is a wasteful number, since it uses less digits than its factorization.

642526088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 642526088 is about 25348.0983113132. The cubic root of 642526088 is about 862.9061983071.

The spelling of 642526088 in words is "six hundred forty-two million, five hundred twenty-six thousand, eighty-eight".