68563770 has 32 divisors (see below), whose sum is σ = 179513280. Its totient is φ = 16621440.

The previous prime is 68563769. The next prime is 68563783. The reversal of 68563770 is 7736586.

It is a super-2 number, since 2×68563770² = 9401981113225800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103555 + ... + 104214.

It is an arithmetic number, because the mean of its divisors is an integer number (5609790).

Almost surely, 2^68563770 is an apocalyptic number.

68563770 is an abundant number, since it is smaller than the sum of its proper divisors (110949510).

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

68563770 is a wasteful number, since it uses less digits than its factorization.

68563770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207790.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 68563770 is about 8280.3242690127. The cubic root of 68563770 is about 409.2904045622.

The spelling of 68563770 in words is "sixty-eight million, five hundred sixty-three thousand, seven hundred seventy".