685196501 has 6 divisors (see below), whose sum is σ = 753150006. Its totient is φ = 622905800.

The previous prime is 685196483. The next prime is 685196537. The reversal of 685196501 is 105691586.

685196501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 377369476 + 307827025 = 19426^2 + 17545^2 .

It is not a de Polignac number, because 685196501 - 2⁶ = 685196437 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 (685196581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2831270 + ... + 2831511.

It is an arithmetic number, because the mean of its divisors is an integer number (125525001).

Almost surely, 2^685196501 is an apocalyptic number.

It is an amenable number.

685196501 is a deficient number, since it is larger than the sum of its proper divisors (67953505).

685196501 is a wasteful number, since it uses less digits than its factorization.

685196501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662803 (or 5662792 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 685196501 is about 26176.2583460662. The cubic root of 685196501 is about 881.6002652638.

The spelling of 685196501 in words is "six hundred eighty-five million, one hundred ninety-six thousand, five hundred one".