8465961620 has 12 divisors (see below), whose sum is σ = 17778519444. Its totient is φ = 3386384640.

The previous prime is 8465961617. The next prime is 8465961643. The reversal of 8465961620 is 261695648.

It can be written as a sum of positive squares in 2 ways, for example, as 4261217284 + 4204744336 = 65278^2 + 64844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211649021 + ... + 211649060.

It is an arithmetic number, because the mean of its divisors is an integer number (1481543287).

Almost surely, 2^8465961620 is an apocalyptic number.

It is an amenable number.

8465961620 is an abundant number, since it is smaller than the sum of its proper divisors (9312557824).

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

8465961620 is a wasteful number, since it uses less digits than its factorization.

8465961620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423298090 (or 423298088 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 8465961620 is about 92010.6603606343. The cubic root of 8465961620 is about 2038.0997314668.

The spelling of 8465961620 in words is "eight billion, four hundred sixty-five million, nine hundred sixty-one thousand, six hundred twenty".