649129355 has 8 divisors (see below), whose sum is σ = 890234592. Its totient is φ = 445117248.

The previous prime is 649129339. The next prime is 649129373. The reversal of 649129355 is 553921946.

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

It is a cyclic number.

It is not a de Polignac number, because 649129355 - 2⁴ = 649129339 is a prime.

It is a Duffinian 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, 9273242 + ... + 9273311.

It is an arithmetic number, because the mean of its divisors is an integer number (111279324).

Almost surely, 2^649129355 is an apocalyptic number.

649129355 is a deficient number, since it is larger than the sum of its proper divisors (241105237).

649129355 is a wasteful number, since it uses less digits than its factorization.

649129355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18546565.

The product of its digits is 291600, while the sum is 44.

The square root of 649129355 is about 25478.0170931727. The cubic root of 649129355 is about 865.8521700950.

The spelling of 649129355 in words is "six hundred forty-nine million, one hundred twenty-nine thousand, three hundred fifty-five".