648377061 has 8 divisors (see below), whose sum is σ = 902089920. Its totient is φ = 413457792.

The previous prime is 648377053. The next prime is 648377087. The reversal of 648377061 is 160773846.

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

It is not a de Polignac number, because 648377061 - 2³ = 648377053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648377761) 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, 4698316 + ... + 4698453.

It is an arithmetic number, because the mean of its divisors is an integer number (112761240).

Almost surely, 2^648377061 is an apocalyptic number.

It is an amenable number.

648377061 is a deficient number, since it is larger than the sum of its proper divisors (253712859).

648377061 is a wasteful number, since it uses less digits than its factorization.

648377061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9396795.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 648377061 is about 25463.2492231451. The cubic root of 648377061 is about 865.5175541042.

The spelling of 648377061 in words is "six hundred forty-eight million, three hundred seventy-seven thousand, sixty-one".