704221978 has 16 divisors (see below), whose sum is σ = 1097740800. Its totient is φ = 338461200.

The previous prime is 704221951. The next prime is 704222017. The reversal of 704221978 is 879122407.

It is a self number, because there is not a number n which added to its sum of digits gives 704221978.

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, 28878 + ... + 47353.

It is an arithmetic number, because the mean of its divisors is an integer number (68608800).

Almost surely, 2^704221978 is an apocalyptic number.

704221978 is a deficient number, since it is larger than the sum of its proper divisors (393518822).

704221978 is a wasteful number, since it uses less digits than its factorization.

704221978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76413.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 704221978 is about 26537.1810484837. The cubic root of 704221978 is about 889.6855253896.

The spelling of 704221978 in words is "seven hundred four million, two hundred twenty-one thousand, nine hundred seventy-eight".