42687064 has 32 divisors (see below), whose sum is σ = 91706400. Its totient is φ = 18247680.

The previous prime is 42687059. The next prime is 42687067. The reversal of 42687064 is 46078624.

It is a super-3 number, since 3×42687064³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42687067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29592 + ... + 31000.

It is an arithmetic number, because the mean of its divisors is an integer number (2865825).

Almost surely, 2^42687064 is an apocalyptic number.

It is an amenable number.

42687064 is an abundant number, since it is smaller than the sum of its proper divisors (49019336).

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

42687064 is a wasteful number, since it uses less digits than its factorization.

42687064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 42687064 is about 6533.5338064481. The cubic root of 42687064 is about 349.4878604983.

The spelling of 42687064 in words is "forty-two million, six hundred eighty-seven thousand, sixty-four".