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66410416 = 2428114771
BaseRepresentation
bin1111110101010…
…1011110110000
311121221222222001
43331111132300
5114000113131
610331223344
71434323242
oct375253660
9147858861
1066410416
113453a146
121a2a7b54
13109b2a07
148b6a092
155c6c261
hex3f557b0

66410416 has 20 divisors (see below), whose sum is σ = 129136824. Its totient is φ = 33084800.

The previous prime is 66410387. The next prime is 66410417. The reversal of 66410416 is 61401466.

It is not an unprimeable number, because it can be changed into a prime (66410417) 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, 2890 + ... + 11881.

Almost surely, 266410416 is an apocalyptic number.

It is an amenable number.

66410416 is a deficient number, since it is larger than the sum of its proper divisors (62726408).

66410416 is a wasteful number, since it uses less digits than its factorization.

66410416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15060 (or 15054 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66410416 is about 8149.2586165859. The cubic root of 66410416 is about 404.9599432008.

The spelling of 66410416 in words is "sixty-six million, four hundred ten thousand, four hundred sixteen".

Divisors: 1 2 4 8 16 281 562 1124 2248 4496 14771 29542 59084 118168 236336 4150651 8301302 16602604 33205208 66410416