216402662 has 16 divisors (see below), whose sum is σ = 372460032. Its totient is φ = 92373000.

The previous prime is 216402643. The next prime is 216402679. The reversal of 216402662 is 266204612.

216402662 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216402662² = 93660224241372488, which contains 22 as substring.

It is a congruent number.

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, 27278 + ... + 34305.

It is an arithmetic number, because the mean of its divisors is an integer number (23278752).

Almost surely, 2^216402662 is an apocalyptic number.

216402662 is a deficient number, since it is larger than the sum of its proper divisors (156057370).

216402662 is a wasteful number, since it uses less digits than its factorization.

216402662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61843.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 216402662 is about 14710.6309178091. The cubic root of 216402662 is about 600.3726037480.

The spelling of 216402662 in words is "two hundred sixteen million, four hundred two thousand, six hundred sixty-two".