211620964 has 24 divisors (see below), whose sum is σ = 398774880. Its totient is φ = 97896576.

The previous prime is 211620949. The next prime is 211620971. The reversal of 211620964 is 469026112.

211620964 = T₈₀ + T₈₁ + ... + T₁₀₈₂.

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, 22362 + ... + 30385.

It is an arithmetic number, because the mean of its divisors is an integer number (16615620).

Almost surely, 2^211620964 is an apocalyptic number.

It is an amenable number.

211620964 is a deficient number, since it is larger than the sum of its proper divisors (187153916).

211620964 is a wasteful number, since it uses less digits than its factorization.

211620964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52827 (or 52825 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 211620964 is about 14547.1978057631. The cubic root of 211620964 is about 595.9176237064.

The spelling of 211620964 in words is "two hundred eleven million, six hundred twenty thousand, nine hundred sixty-four".