4720742645 has 6 divisors (see below), whose sum is σ = 5665075542. Its totient is φ = 3776471208.

The previous prime is 4720742639. The next prime is 4720742647. The reversal of 4720742645 is 5462470274.

It can be written as a sum of positive squares in only one way, i.e., 3776594116 + 944148529 = 61454^2 + 30727^2 .

It is not a de Polignac number, because 4720742645 - 2⁶ = 4720742581 is a prime.

It is a super-2 number, since 2×4720742645² = 44570822240643192050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4720742647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138272 + ... + 168998.

It is an arithmetic number, because the mean of its divisors is an integer number (944179257).

Almost surely, 2^4720742645 is an apocalyptic number.

It is an amenable number.

4720742645 is a deficient number, since it is larger than the sum of its proper divisors (944332897).

4720742645 is an frugal number, since it uses more digits than its factorization.

4720742645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61459 (or 30732 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 41.

The square root of 4720742645 is about 68707.6607446360. The cubic root of 4720742645 is about 1677.5292769205.

The spelling of 4720742645 in words is "four billion, seven hundred twenty million, seven hundred forty-two thousand, six hundred forty-five".