678630501 has 8 divisors (see below), whose sum is σ = 1005378560. Its totient is φ = 452420316.

The previous prime is 678630481. The next prime is 678630503. The reversal of 678630501 is 105036876.

It is not a de Polignac number, because 678630501 - 2⁶ = 678630437 is a prime.

It is a super-2 number, since 2×678630501² = 921078713775022002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678630503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12567205 + ... + 12567258.

It is an arithmetic number, because the mean of its divisors is an integer number (125672320).

Almost surely, 2^678630501 is an apocalyptic number.

It is an amenable number.

678630501 is a deficient number, since it is larger than the sum of its proper divisors (326748059).

678630501 is a wasteful number, since it uses less digits than its factorization.

678630501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25134472 (or 25134466 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 678630501 is about 26050.5374416729. The cubic root of 678630501 is about 878.7751990680.

The spelling of 678630501 in words is "six hundred seventy-eight million, six hundred thirty thousand, five hundred one".