655672011 has 4 divisors (see below), whose sum is σ = 874229352. Its totient is φ = 437114672.

The previous prime is 655672001. The next prime is 655672013. The reversal of 655672011 is 110276556.

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 655672011 - 2¹⁷ = 655540939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655672013) 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, 109278666 + ... + 109278671.

It is an arithmetic number, because the mean of its divisors is an integer number (218557338).

Almost surely, 2^655672011 is an apocalyptic number.

655672011 is a deficient number, since it is larger than the sum of its proper divisors (218557341).

655672011 is a wasteful number, since it uses less digits than its factorization.

655672011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218557340.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 655672011 is about 25606.0932396959. The cubic root of 655672011 is about 868.7514618197.

The spelling of 655672011 in words is "six hundred fifty-five million, six hundred seventy-two thousand, eleven".