648054951 has 4 divisors (see below), whose sum is σ = 864073272. Its totient is φ = 432036632.

The previous prime is 648054947. The next prime is 648054989. The reversal of 648054951 is 159450846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 648054951 - 2² = 648054947 is a prime.

It is a super-2 number, since 2×648054951² = 839950439031224802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648054931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108009156 + ... + 108009161.

It is an arithmetic number, because the mean of its divisors is an integer number (216018318).

Almost surely, 2^648054951 is an apocalyptic number.

648054951 is a deficient number, since it is larger than the sum of its proper divisors (216018321).

648054951 is a wasteful number, since it uses less digits than its factorization.

648054951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216018320.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 648054951 is about 25456.9234394103. The cubic root of 648054951 is about 865.3742023128.

The spelling of 648054951 in words is "six hundred forty-eight million, fifty-four thousand, nine hundred fifty-one".