816620466 has 16 divisors (see below), whose sum is σ = 1729314144. Its totient is φ = 256194624.

The previous prime is 816620459. The next prime is 816620473. The reversal of 816620466 is 664026618.

It is an interprime number because it is at equal distance from previous prime (816620459) and next prime (816620473).

It is a Curzon 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, 4002940 + ... + 4003143.

It is an arithmetic number, because the mean of its divisors is an integer number (108082134).

Almost surely, 2^816620466 is an apocalyptic number.

816620466 is an abundant number, since it is smaller than the sum of its proper divisors (912693678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816620466 is a wasteful number, since it uses less digits than its factorization.

816620466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006105.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 816620466 is about 28576.5719777583. The cubic root of 816620466 is about 934.7025337957.

The spelling of 816620466 in words is "eight hundred sixteen million, six hundred twenty thousand, four hundred sixty-six".