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68898097 = 611129477
BaseRepresentation
bin1000001101101…
…00110100110001
311210122101102101
410012310310301
5120114214342
610500420401
71464424042
oct406646461
9153571371
1068898097
1135989184
121b0a7701
1311374108
1492168c9
1560ae3b7
hex41b4d31

68898097 has 4 divisors (see below), whose sum is σ = 70027636. Its totient is φ = 67768560.

The previous prime is 68898091. The next prime is 68898103. The reversal of 68898097 is 79089886.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68898091) and next prime (68898103).

It can be written as a sum of positive squares in 2 ways, for example, as 26790976 + 42107121 = 5176^2 + 6489^2 .

It is a de Polignac number, because none of the positive numbers 2k-68898097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68898091) 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, 564678 + ... + 564799.

It is an arithmetic number, because the mean of its divisors is an integer number (17506909).

Almost surely, 268898097 is an apocalyptic number.

It is an amenable number.

68898097 is a deficient number, since it is larger than the sum of its proper divisors (1129539).

68898097 is a wasteful number, since it uses less digits than its factorization.

68898097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129538.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 68898097 is about 8300.4877567526. The cubic root of 68898097 is about 409.9545795411.

The spelling of 68898097 in words is "sixty-eight million, eight hundred ninety-eight thousand, ninety-seven".

Divisors: 1 61 1129477 68898097