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61650457 = 115994993
BaseRepresentation
bin1110101100101…
…1011000011001
311022000011112021
43223023120121
5111240303312
610041214441
71346006641
oct353133031
9138004467
1061650457
11318889a0
1218791421
13ca0727b
14828b521
15562bc07
hex3acb619

61650457 has 8 divisors (see below), whose sum is σ = 68395680. Its totient is φ = 55095360.

The previous prime is 61650439. The next prime is 61650461. The reversal of 61650457 is 75405616.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-61650457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61650467) 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, 46848 + ... + 48145.

It is an arithmetic number, because the mean of its divisors is an integer number (8549460).

Almost surely, 261650457 is an apocalyptic number.

It is an amenable number.

61650457 is a deficient number, since it is larger than the sum of its proper divisors (6745223).

61650457 is a wasteful number, since it uses less digits than its factorization.

61650457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95063.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 61650457 is about 7851.7804987149. The cubic root of 61650457 is about 395.0439666917.

The spelling of 61650457 in words is "sixty-one million, six hundred fifty thousand, four hundred fifty-seven".

Divisors: 1 11 59 649 94993 1044923 5604587 61650457