63920068 has 12 divisors (see below), whose sum is σ = 118440252. Its totient is φ = 30080000.

The previous prime is 63920057. The next prime is 63920081. The reversal of 63920068 is 86002936.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17707264 + 46212804 = 4208^2 + 6798^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469933 + ... + 470068.

It is an arithmetic number, because the mean of its divisors is an integer number (9870021).

Almost surely, 2^63920068 is an apocalyptic number.

63920068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

63920068 is a deficient number, since it is larger than the sum of its proper divisors (54520184).

63920068 is a wasteful number, since it uses less digits than its factorization.

63920068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940022 (or 940020 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 63920068 is about 7995.0026891803. The cubic root of 63920068 is about 399.8334056254.

The spelling of 63920068 in words is "sixty-three million, nine hundred twenty thousand, sixty-eight".