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116619641 = 1021114221
BaseRepresentation
bin1101111001101…
…11100101111001
322010102220001222
412330313211321
5214323312031
615323321425
72614151645
oct674674571
9263386058
10116619641
115a913076
1233080275
131b212408
14116b9c25
15a388e7b
hex6f37979

116619641 has 4 divisors (see below), whose sum is σ = 116734884. Its totient is φ = 116504400.

The previous prime is 116619623. The next prime is 116619649. The reversal of 116619641 is 146916611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146916611 = 1131300147.

It can be written as a sum of positive squares in 2 ways, for example, as 64722025 + 51897616 = 8045^2 + 7204^2 .

It is a cyclic number.

It is not a de Polignac number, because 116619641 - 218 = 116357497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116619649) 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, 56090 + ... + 58131.

It is an arithmetic number, because the mean of its divisors is an integer number (29183721).

Almost surely, 2116619641 is an apocalyptic number.

It is an amenable number.

116619641 is a deficient number, since it is larger than the sum of its proper divisors (115243).

116619641 is a wasteful number, since it uses less digits than its factorization.

116619641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115242.

The product of its digits is 7776, while the sum is 35.

The square root of 116619641 is about 10799.0574125708. The cubic root of 116619641 is about 488.5667419522.

The spelling of 116619641 in words is "one hundred sixteen million, six hundred nineteen thousand, six hundred forty-one".

Divisors: 1 1021 114221 116619641