680029653 has 4 divisors (see below), whose sum is σ = 906706208. Its totient is φ = 453353100.

The previous prime is 680029639. The next prime is 680029657. The reversal of 680029653 is 356920086.

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 not a de Polignac number, because 680029653 - 2⁸ = 680029397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680029657) 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, 113338273 + ... + 113338278.

It is an arithmetic number, because the mean of its divisors is an integer number (226676552).

Almost surely, 2^680029653 is an apocalyptic number.

It is an amenable number.

680029653 is a deficient number, since it is larger than the sum of its proper divisors (226676555).

680029653 is a wasteful number, since it uses less digits than its factorization.

680029653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226676554.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 680029653 is about 26077.3781849326. The cubic root of 680029653 is about 879.3787165194.

The spelling of 680029653 in words is "six hundred eighty million, twenty-nine thousand, six hundred fifty-three".