63695790 has 72 divisors (see below), whose sum is σ = 175233240. Its totient is φ = 16008192.

The previous prime is 63695789. The next prime is 63695791. The reversal of 63695790 is 9759636.

63695790 is a `hidden beast` number, since 636 + 9 + 5 + 7 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (63695789) and next prime (63695791).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63695791) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 329934 + ... + 330126.

It is an arithmetic number, because the mean of its divisors is an integer number (2433795).

Almost surely, 2^63695790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63695790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87616620).

63695790 is an abundant number, since it is smaller than the sum of its proper divisors (111537450).

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

63695790 is a wasteful number, since it uses less digits than its factorization.

63695790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 63695790 is about 7980.9642274602. The cubic root of 63695790 is about 399.3652223429.

The spelling of 63695790 in words is "sixty-three million, six hundred ninety-five thousand, seven hundred ninety".