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68620608 = 263473161
BaseRepresentation
bin1000001011100…
…01000101000000
311210010021210000
410011301011000
5120031324413
610450440000
71462160040
oct405610500
9153107700
1068620608
1135809751
121ab93000
13112a7a14
149183720
156057073
hex4171140

68620608 has 280 divisors, whose sum is σ = 243905024. Its totient is φ = 18662400.

The previous prime is 68620553. The next prime is 68620621. The reversal of 68620608 is 80602686.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1124898 + ... + 1124958.

Almost surely, 268620608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68620608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121952512).

68620608 is an abundant number, since it is smaller than the sum of its proper divisors (175284416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68620608 is a wasteful number, since it uses less digits than its factorization.

68620608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68620608 is about 8283.7556699845. The cubic root of 68620608 is about 409.4034711896.

68620608 divided by its sum of digits (36) gives a triangular number (1906128 = T1952).

The spelling of 68620608 in words is "sixty-eight million, six hundred twenty thousand, six hundred eight".