646587520354 has 32 divisors (see below), whose sum is σ = 1002485569536. Its totient is φ = 312582488400.

The previous prime is 646587520351. The next prime is 646587520363. The reversal of 646587520354 is 453025785646.

646587520354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 646587520295 and 646587520304.

It is not an unprimeable number, because it can be changed into a prime (646587520351) 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, 12184579 + ... + 12237529.

It is an arithmetic number, because the mean of its divisors is an integer number (31327674048).

Almost surely, 2^646587520354 is an apocalyptic number.

646587520354 is a deficient number, since it is larger than the sum of its proper divisors (355898049182).

646587520354 is a wasteful number, since it uses less digits than its factorization.

646587520354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54430.

The product of its (nonzero) digits is 24192000, while the sum is 55.

The spelling of 646587520354 in words is "six hundred forty-six billion, five hundred eighty-seven million, five hundred twenty thousand, three hundred fifty-four".