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130465661 = 151864011
BaseRepresentation
bin1111100011010…
…11111101111101
3100002111100020112
413301223331331
5231344400121
620540155405
73142640234
oct761537575
9302440215
10130465661
116770a867
1237838b65
132104c721
1413481b1b
15b6c175b
hex7c6bf7d

130465661 has 4 divisors (see below), whose sum is σ = 131329824. Its totient is φ = 129601500.

The previous prime is 130465631. The next prime is 130465669. The reversal of 130465661 is 166564031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 166564031 = 627126561.

It is a cyclic number.

It is not a de Polignac number, because 130465661 - 26 = 130465597 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 (130465669) 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, 431855 + ... + 432156.

It is an arithmetic number, because the mean of its divisors is an integer number (32832456).

Almost surely, 2130465661 is an apocalyptic number.

It is an amenable number.

130465661 is a deficient number, since it is larger than the sum of its proper divisors (864163).

130465661 is an equidigital number, since it uses as much as digits as its factorization.

130465661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864162.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 130465661 is about 11422.1565827124. The cubic root of 130465661 is about 507.1838386055.

The spelling of 130465661 in words is "one hundred thirty million, four hundred sixty-five thousand, six hundred sixty-one".

Divisors: 1 151 864011 130465661