1720746616 has 8 divisors (see below), whose sum is σ = 3226399920. Its totient is φ = 860373304.

The previous prime is 1720746611. The next prime is 1720746617. The reversal of 1720746616 is 6166470271.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720746611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107546656 + ... + 107546671.

It is an arithmetic number, because the mean of its divisors is an integer number (403299990).

Almost surely, 2^1720746616 is an apocalyptic number.

It is an amenable number.

1720746616 is a deficient number, since it is larger than the sum of its proper divisors (1505653304).

1720746616 is a wasteful number, since it uses less digits than its factorization.

1720746616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215093333 (or 215093329 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 1720746616 is about 41481.8829852262. The cubic root of 1720746616 is about 1198.3186211639.

The spelling of 1720746616 in words is "one billion, seven hundred twenty million, seven hundred forty-six thousand, six hundred sixteen".