858387064 has 8 divisors (see below), whose sum is σ = 1609475760. Its totient is φ = 429193528.

The previous prime is 858387053. The next prime is 858387067. The reversal of 858387064 is 460783858.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 858386999 and 858387017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858387067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53649184 + ... + 53649199.

It is an arithmetic number, because the mean of its divisors is an integer number (201184470).

Almost surely, 2^858387064 is an apocalyptic number.

It is an amenable number.

858387064 is a deficient number, since it is larger than the sum of its proper divisors (751088696).

858387064 is a wasteful number, since it uses less digits than its factorization.

858387064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107298389 (or 107298385 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 858387064 is about 29298.2433603109. The cubic root of 858387064 is about 950.3736532004.

The spelling of 858387064 in words is "eight hundred fifty-eight million, three hundred eighty-seven thousand, sixty-four".