649177601 has 8 divisors (see below), whose sum is σ = 658920000. Its totient is φ = 639500400.

The previous prime is 649177577. The next prime is 649177609. The reversal of 649177601 is 106771946.

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 649177601 - 2¹⁸ = 648915457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649177609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3950 + ... + 36248.

It is an arithmetic number, because the mean of its divisors is an integer number (82365000).

Almost surely, 2^649177601 is an apocalyptic number.

It is an amenable number.

649177601 is a deficient number, since it is larger than the sum of its proper divisors (9742399).

649177601 is a wasteful number, since it uses less digits than its factorization.

649177601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32599.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 649177601 is about 25478.9638918069. The cubic root of 649177601 is about 865.8736208113.

The spelling of 649177601 in words is "six hundred forty-nine million, one hundred seventy-seven thousand, six hundred one".