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75464969 = 418920681
BaseRepresentation
bin1000111111110…
…00000100001001
312021000000110212
410133320010021
5123304334334
611253250505
71604304326
oct437700411
9167000425
1075464969
1139663a48
1221333a35
1312833138
14a045b4d
156959ece
hex47f8109

75464969 has 8 divisors (see below), whose sum is σ = 78177960. Its totient is φ = 72793600.

The previous prime is 75464927. The next prime is 75464971. The reversal of 75464969 is 96946457.

It can be written as a sum of positive squares in 4 ways, for example, as 6375625 + 69089344 = 2525^2 + 8312^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 75464969 - 212 = 75460873 is a prime.

It is a super-2 number, since 2×754649692 = 11389923092341922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75464569) 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, 6692 + ... + 13989.

It is an arithmetic number, because the mean of its divisors is an integer number (9772245).

Almost surely, 275464969 is an apocalyptic number.

It is an amenable number.

75464969 is a deficient number, since it is larger than the sum of its proper divisors (2712991).

75464969 is a wasteful number, since it uses less digits than its factorization.

75464969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20811.

The product of its digits is 1632960, while the sum is 50.

The square root of 75464969 is about 8687.0575570788. The cubic root of 75464969 is about 422.5860268554.

The spelling of 75464969 in words is "seventy-five million, four hundred sixty-four thousand, nine hundred sixty-nine".

Divisors: 1 41 89 3649 20681 847921 1840609 75464969