64587894 has 16 divisors (see below), whose sum is σ = 147629568. Its totient is φ = 18453672.

The previous prime is 64587889. The next prime is 64587899. The reversal of 64587894 is 49878546.

It is an interprime number because it is at equal distance from previous prime (64587889) and next prime (64587899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64587899) 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, 768862 + ... + 768945.

It is an arithmetic number, because the mean of its divisors is an integer number (9226848).

Almost surely, 2^64587894 is an apocalyptic number.

64587894 is an abundant number, since it is smaller than the sum of its proper divisors (83041674).

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

64587894 is a wasteful number, since it uses less digits than its factorization.

64587894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537819.

The product of its digits is 1935360, while the sum is 51.

The square root of 64587894 is about 8036.6593806133. The cubic root of 64587894 is about 401.2210479785.

The spelling of 64587894 in words is "sixty-four million, five hundred eighty-seven thousand, eight hundred ninety-four".