685001606554 has 8 divisors (see below), whose sum is σ = 1029702630528. Its totient is φ = 341767396380.

The previous prime is 685001606551. The next prime is 685001606561. The reversal of 685001606554 is 455606100586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×685001606554² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685001606551) 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, 366702282 + ... + 366704149.

It is an arithmetic number, because the mean of its divisors is an integer number (128712828816).

Almost surely, 2^685001606554 is an apocalyptic number.

685001606554 is a deficient number, since it is larger than the sum of its proper divisors (344701023974).

685001606554 is a wasteful number, since it uses less digits than its factorization.

685001606554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733406900.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 685001606554 in words is "six hundred eighty-five billion, one million, six hundred six thousand, five hundred fifty-four".