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99760145 = 5293971733
BaseRepresentation
bin1011111001000…
…11100000010001
320221201100012012
411330203200101
5201014311040
613522112305
72320642622
oct574434021
9227640165
1099760145
1151348301
12294ab695
131788b594
14d36ba49
158b58865
hex5f23811

99760145 has 16 divisors (see below), whose sum is σ = 124223760. Its totient is φ = 76817664.

The previous prime is 99760123. The next prime is 99760147. The reversal of 99760145 is 54106799.

It is a Cunningham number, because it is equal to 99882+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 99760144 = 1^2 + 9988^2 .

It is a cyclic number.

It is not a de Polignac number, because 99760145 - 224 = 82982929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99760147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56699 + ... + 58431.

It is an arithmetic number, because the mean of its divisors is an integer number (7763985).

Almost surely, 299760145 is an apocalyptic number.

It is an amenable number.

99760145 is a deficient number, since it is larger than the sum of its proper divisors (24463615).

99760145 is a wasteful number, since it uses less digits than its factorization.

99760145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 99760145 is about 9988.0000500601. Note that the first 4 decimals coincide. The cubic root of 99760145 is about 463.7874834992.

The spelling of 99760145 in words is "ninety-nine million, seven hundred sixty thousand, one hundred forty-five".

Divisors: 1 5 29 145 397 1733 1985 8665 11513 50257 57565 251285 688001 3440005 19952029 99760145