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630037541 = 7212857909
BaseRepresentation
bin100101100011011…
…001110000100101
31121220112020000202
4211203121300211
52242242200131
6142303520245
721420142100
oct4543316045
91556466022
10630037541
112a3704591
12156bb9085
13a06b49a3
145d965737
153a4a2bcb
hex258d9c25

630037541 has 6 divisors (see below), whose sum is σ = 732900870. Its totient is φ = 540032136.

The previous prime is 630037537. The next prime is 630037547. The reversal of 630037541 is 145730036.

It can be written as a sum of positive squares in only one way, i.e., 626250625 + 3786916 = 25025^2 + 1946^2 .

It is not a de Polignac number, because 630037541 - 22 = 630037537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630037547) 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, 6428906 + ... + 6429003.

It is an arithmetic number, because the mean of its divisors is an integer number (122150145).

Almost surely, 2630037541 is an apocalyptic number.

It is an amenable number.

630037541 is a deficient number, since it is larger than the sum of its proper divisors (102863329).

630037541 is a wasteful number, since it uses less digits than its factorization.

630037541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857923 (or 12857916 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 630037541 is about 25100.5486195023. The cubic root of 630037541 is about 857.2789156543.

Adding to 630037541 its reverse (145730036), we get a palindrome (775767577).

The spelling of 630037541 in words is "six hundred thirty million, thirty-seven thousand, five hundred forty-one".

Divisors: 1 7 49 12857909 90005363 630037541