649527958 has 16 divisors (see below), whose sum is σ = 1070161920. Its totient is φ = 294293736.

The previous prime is 649527947. The next prime is 649527961. The reversal of 649527958 is 859725946.

It is a junction number, because it is equal to n+sod(n) for n = 649527899 and 649527908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370710 + ... + 372457.

It is an arithmetic number, because the mean of its divisors is an integer number (66885120).

Almost surely, 2^649527958 is an apocalyptic number.

649527958 is a deficient number, since it is larger than the sum of its proper divisors (420633962).

649527958 is a wasteful number, since it uses less digits than its factorization.

649527958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743211.

The product of its digits is 5443200, while the sum is 55.

The square root of 649527958 is about 25485.8383813443. The cubic root of 649527958 is about 866.0293616160.

It can be divided in two parts, 6495 and 27958, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 649527958 in words is "six hundred forty-nine million, five hundred twenty-seven thousand, nine hundred fifty-eight".