864513951 has 8 divisors (see below), whose sum is σ = 1317354624. Its totient is φ = 494007960.

The previous prime is 864513913. The next prime is 864513967. The reversal of 864513951 is 159315468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 864513951 - 2¹⁴ = 864497567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864514951) 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, 20583645 + ... + 20583686.

It is an arithmetic number, because the mean of its divisors is an integer number (164669328).

Almost surely, 2^864513951 is an apocalyptic number.

864513951 is a deficient number, since it is larger than the sum of its proper divisors (452840673).

864513951 is a wasteful number, since it uses less digits than its factorization.

864513951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41167341.

The product of its digits is 129600, while the sum is 42.

The square root of 864513951 is about 29402.6180977137. The cubic root of 864513951 is about 952.6294470704.

The spelling of 864513951 in words is "eight hundred sixty-four million, five hundred thirteen thousand, nine hundred fifty-one".