663537070 has 32 divisors (see below), whose sum is σ = 1394039808. Its totient is φ = 222656928.

The previous prime is 663537001. The next prime is 663537073. The reversal of 663537070 is 70735366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663537073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97552 + ... + 104131.

It is an arithmetic number, because the mean of its divisors is an integer number (43563744).

Almost surely, 2^663537070 is an apocalyptic number.

663537070 is an abundant number, since it is smaller than the sum of its proper divisors (730502738).

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

663537070 is a wasteful number, since it uses less digits than its factorization.

663537070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201744.

The product of its (nonzero) digits is 79380, while the sum is 37.

The square root of 663537070 is about 25759.2133032047. The cubic root of 663537070 is about 872.2113428412.

The spelling of 663537070 in words is "six hundred sixty-three million, five hundred thirty-seven thousand, seventy".