806494831624 has 8 divisors (see below), whose sum is σ = 1512177809310. Its totient is φ = 403247415808.

The previous prime is 806494831621. The next prime is 806494831651. The reversal of 806494831624 is 426138494608.

It can be written as a sum of positive squares in only one way, i.e., 622095012900 + 184399818724 = 788730^2 + 429418^2 .

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

It is a super-2 number, since 2×806494831624² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (806494831621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50405926969 + ... + 50405926984.

Almost surely, 2^806494831624 is an apocalyptic number.

It is an amenable number.

806494831624 is a deficient number, since it is larger than the sum of its proper divisors (705682977686).

806494831624 is a wasteful number, since it uses less digits than its factorization.

806494831624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100811853959 (or 100811853955 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 806494831624 in words is "eight hundred six billion, four hundred ninety-four million, eight hundred thirty-one thousand, six hundred twenty-four".