1620670716 has 36 divisors (see below), whose sum is σ = 4681938352. Its totient is φ = 463048704.

The previous prime is 1620670703. The next prime is 1620670739. The reversal of 1620670716 is 6170760261.

1620670716 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3215365 + ... + 3215868.

Almost surely, 2^1620670716 is an apocalyptic number.

It is an amenable number.

1620670716 is an abundant number, since it is smaller than the sum of its proper divisors (3061267636).

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

1620670716 is a wasteful number, since it uses less digits than its factorization.

1620670716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6431250 (or 6431245 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1620670716 is about 40257.5547692604. The cubic root of 1620670716 is about 1174.6223542070.

The spelling of 1620670716 in words is "one billion, six hundred twenty million, six hundred seventy thousand, seven hundred sixteen".