678203481 has 4 divisors (see below), whose sum is σ = 904271312. Its totient is φ = 452135652.

The previous prime is 678203473. The next prime is 678203489. The reversal of 678203481 is 184302876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (678203473) and next prime (678203489).

It is not a de Polignac number, because 678203481 - 2³ = 678203473 is a prime.

It is a super-2 number, since 2×678203481² = 919919923281034722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678203489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113033911 + ... + 113033916.

It is an arithmetic number, because the mean of its divisors is an integer number (226067828).

Almost surely, 2^678203481 is an apocalyptic number.

It is an amenable number.

678203481 is a deficient number, since it is larger than the sum of its proper divisors (226067831).

678203481 is a wasteful number, since it uses less digits than its factorization.

678203481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226067830.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 678203481 is about 26042.3401598243. The cubic root of 678203481 is about 878.5908408541.

The spelling of 678203481 in words is "six hundred seventy-eight million, two hundred three thousand, four hundred eighty-one".