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70654001621 = 712899782497
BaseRepresentation
bin100000111001101001…
…1101000000111010101
320202100222222011102212
41001303103220013111
52124144411022441
652242532243205
75050605050630
oct1016323500725
9222328864385
1070654001621
1127a67384185
1211839a70505
13687ca9cb68
1435c3818c17
151c87c48eeb
hex10734e81d5

70654001621 has 8 divisors (see below), whose sum is σ = 80753793600. Its totient is φ = 60555800448.

The previous prime is 70654001591. The next prime is 70654001729. The reversal of 70654001621 is 12610045607.

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 70654001621 - 210 = 70654000597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70654001021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300956 + ... + 481541.

It is an arithmetic number, because the mean of its divisors is an integer number (10094224200).

Almost surely, 270654001621 is an apocalyptic number.

It is an amenable number.

70654001621 is a deficient number, since it is larger than the sum of its proper divisors (10099791979).

70654001621 is a wasteful number, since it uses less digits than its factorization.

70654001621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795403.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 70654001621 in words is "seventy billion, six hundred fifty-four million, one thousand, six hundred twenty-one".

Divisors: 1 7 12899 90293 782497 5477479 10093428803 70654001621