1171620620 has 24 divisors (see below), whose sum is σ = 2605133664. Its totient is φ = 441080576.

The previous prime is 1171620587. The next prime is 1171620647. The reversal of 1171620620 is 260261711.

It is a self number, because there is not a number n which added to its sum of digits gives 1171620620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722632 + ... + 1723311.

It is an arithmetic number, because the mean of its divisors is an integer number (108547236).

Almost surely, 2^1171620620 is an apocalyptic number.

1171620620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171620620 is an abundant number, since it is smaller than the sum of its proper divisors (1433513044).

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

1171620620 is a wasteful number, since it uses less digits than its factorization.

1171620620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445969 (or 3445967 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1171620620 is about 34228.9441847101. The cubic root of 1171620620 is about 1054.2145408085.

The spelling of 1171620620 in words is "one billion, one hundred seventy-one million, six hundred twenty thousand, six hundred twenty".