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536700721 = 5303101207
BaseRepresentation
bin11111111111010…
…110011100110001
31101101220012222111
4133333112130301
52044343410341
6125131205321
716204611064
oct3777263461
91341805874
10536700721
11255a54217
1212b8a6841
1387264cbb
14513ca8db
15321b7681
hex1ffd6731

536700721 has 4 divisors (see below), whose sum is σ = 536807232. Its totient is φ = 536594212.

The previous prime is 536700719. The next prime is 536700743. The reversal of 536700721 is 127007635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 536700721 - 21 = 536700719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536700751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45301 + ... + 55906.

It is an arithmetic number, because the mean of its divisors is an integer number (134201808).

Almost surely, 2536700721 is an apocalyptic number.

It is an amenable number.

536700721 is a deficient number, since it is larger than the sum of its proper divisors (106511).

536700721 is a wasteful number, since it uses less digits than its factorization.

536700721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106510.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 536700721 is about 23166.8021314984. The cubic root of 536700721 is about 812.6634475437.

The spelling of 536700721 in words is "five hundred thirty-six million, seven hundred thousand, seven hundred twenty-one".

Divisors: 1 5303 101207 536700721