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961074987 = 32313928623
BaseRepresentation
bin111001010010001…
…101011100101011
32110222102200000220
4321102031130223
53432013344422
6235211101123
732550000615
oct7122153453
92428380026
10961074987
11453557954
12229a417a3
1312415ba32
14918d7db5
1559592e5c
hex3948d72b

961074987 has 8 divisors (see below), whose sum is σ = 1337147904. Its totient is φ = 612859368.

The previous prime is 961074979. The next prime is 961074997. The reversal of 961074987 is 789470169.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 961074987 - 23 = 961074979 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (961074997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6964243 + ... + 6964380.

It is an arithmetic number, because the mean of its divisors is an integer number (167143488).

Almost surely, 2961074987 is an apocalyptic number.

961074987 is a deficient number, since it is larger than the sum of its proper divisors (376072917).

961074987 is a wasteful number, since it uses less digits than its factorization.

961074987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13928649.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 961074987 is about 31001.2094441491. The cubic root of 961074987 is about 986.8529070890.

The spelling of 961074987 in words is "nine hundred sixty-one million, seventy-four thousand, nine hundred eighty-seven".

Divisors: 1 3 23 69 13928623 41785869 320358329 961074987