821077474 has 16 divisors (see below), whose sum is σ = 1408578048. Its totient is φ = 351636192.

The previous prime is 821077427. The next prime is 821077513. The reversal of 821077474 is 474770128.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402 + ... + 40525.

It is an arithmetic number, because the mean of its divisors is an integer number (88036128).

Almost surely, 2^821077474 is an apocalyptic number.

821077474 is a deficient number, since it is larger than the sum of its proper divisors (587500574).

821077474 is a wasteful number, since it uses less digits than its factorization.

821077474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42369.

The product of its (nonzero) digits is 87808, while the sum is 40.

The square root of 821077474 is about 28654.4494625180. The cubic root of 821077474 is about 936.3999442912.

The spelling of 821077474 in words is "eight hundred twenty-one million, seventy-seven thousand, four hundred seventy-four".