705650820 has 48 divisors (see below), whose sum is σ = 2258083968. Its totient is φ = 161291520.

The previous prime is 705650789. The next prime is 705650843. The reversal of 705650820 is 28056507.

It is a happy number.

It is a super-3 number, since 3×705650820³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839641 + ... + 840480.

It is an arithmetic number, because the mean of its divisors is an integer number (47043416).

Almost surely, 2^705650820 is an apocalyptic number.

705650820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

705650820 is an abundant number, since it is smaller than the sum of its proper divisors (1552433148).

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

705650820 is a wasteful number, since it uses less digits than its factorization.

705650820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680140 (or 1680138 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 705650820 is about 26564.0889171829. The cubic root of 705650820 is about 890.2868326001.

The spelling of 705650820 in words is "seven hundred five million, six hundred fifty thousand, eight hundred twenty".