64856463 has 32 divisors (see below), whose sum is σ = 100918272. Its totient is φ = 36288000.

The previous prime is 64856461. The next prime is 64856501. The reversal of 64856463 is 36465846.

It is not a de Polignac number, because 64856463 - 2¹ = 64856461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64856461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358233 + ... + 358413.

It is an arithmetic number, because the mean of its divisors is an integer number (3153696).

Almost surely, 2^64856463 is an apocalyptic number.

64856463 is a deficient number, since it is larger than the sum of its proper divisors (36061809).

64856463 is a wasteful number, since it uses less digits than its factorization.

64856463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its digits is 414720, while the sum is 42.

The square root of 64856463 is about 8053.3510416472. The cubic root of 64856463 is about 401.7763972702.

The spelling of 64856463 in words is "sixty-four million, eight hundred fifty-six thousand, four hundred sixty-three".