649207104 has 224 divisors, whose sum is σ = 2147255040. Its totient is φ = 168542208.

The previous prime is 649207103. The next prime is 649207147. The reversal of 649207104 is 401702946.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649207103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275202 + ... + 1275710.

It is an arithmetic number, because the mean of its divisors is an integer number (9585960).

Almost surely, 2^649207104 is an apocalyptic number.

649207104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649207104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073627520).

649207104 is an abundant number, since it is smaller than the sum of its proper divisors (1498047936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649207104 is a wasteful number, since it uses less digits than its factorization.

649207104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 649207104 is about 25479.5428530419. The cubic root of 649207104 is about 865.8867376546.

The spelling of 649207104 in words is "six hundred forty-nine million, two hundred seven thousand, one hundred four".