678649062 has 32 divisors (see below), whose sum is σ = 1670522112. Its totient is φ = 178984224.

The previous prime is 678649051. The next prime is 678649073. The reversal of 678649062 is 260946876.

It is an interprime number because it is at equal distance from previous prime (678649051) and next prime (678649073).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620928 + ... + 622019.

It is an arithmetic number, because the mean of its divisors is an integer number (52203816).

Almost surely, 2^678649062 is an apocalyptic number.

678649062 is an abundant number, since it is smaller than the sum of its proper divisors (991873050).

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

678649062 is a wasteful number, since it uses less digits than its factorization.

678649062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242972.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 678649062 is about 26050.8936890848. The cubic root of 678649062 is about 878.7832106923.

The spelling of 678649062 in words is "six hundred seventy-eight million, six hundred forty-nine thousand, sixty-two".