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64980201 = 31113167907
BaseRepresentation
bin1111011111100…
…0010011101001
311112021100002010
43313320103221
5113113331301
610240430133
71416215436
oct367702351
9145240063
1064980201
1133752650
1219918349
1310601a30
1488b6b8d
155a885d6
hex3df84e9

64980201 has 32 divisors (see below), whose sum is σ = 102509568. Its totient is φ = 36095040.

The previous prime is 64980197. The next prime is 64980211. The reversal of 64980201 is 10208946.

It is not a de Polignac number, because 64980201 - 22 = 64980197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64980211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71190 + ... + 72096.

It is an arithmetic number, because the mean of its divisors is an integer number (3203424).

Almost surely, 264980201 is an apocalyptic number.

It is an amenable number.

64980201 is a deficient number, since it is larger than the sum of its proper divisors (37529367).

64980201 is a wasteful number, since it uses less digits than its factorization.

64980201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 64980201 is about 8061.0297729260. The cubic root of 64980201 is about 402.0317479444.

The spelling of 64980201 in words is "sixty-four million, nine hundred eighty thousand, two hundred one".

Divisors: 1 3 11 13 33 39 143 167 429 501 907 1837 2171 2721 5511 6513 9977 11791 23881 29931 35373 71643 129701 151469 389103 454407 1666159 1969097 4998477 5907291 21660067 64980201