623683970 has 32 divisors (see below), whose sum is σ = 1381701888. Its totient is φ = 197385408.

The previous prime is 623683969. The next prime is 623683979. The reversal of 623683970 is 79386326.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (623683979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341774 + ... + 343593.

It is an arithmetic number, because the mean of its divisors is an integer number (43178184).

Almost surely, 2^623683970 is an apocalyptic number.

623683970 is an abundant number, since it is smaller than the sum of its proper divisors (758017918).

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

623683970 is a wasteful number, since it uses less digits than its factorization.

623683970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685394.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 623683970 is about 24973.6655299137. The cubic root of 623683970 is about 854.3874504056.

The spelling of 623683970 in words is "six hundred twenty-three million, six hundred eighty-three thousand, nine hundred seventy".