63964020 has 24 divisors (see below), whose sum is σ = 179099424. Its totient is φ = 17057056.

The previous prime is 63964003. The next prime is 63964037. The reversal of 63964020 is 2046936.

It is an interprime number because it is at equal distance from previous prime (63964003) and next prime (63964037).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532974 + ... + 533093.

It is an arithmetic number, because the mean of its divisors is an integer number (7462476).

Almost surely, 2^63964020 is an apocalyptic number.

63964020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63964020 is an abundant number, since it is smaller than the sum of its proper divisors (115135404).

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

63964020 is a wasteful number, since it uses less digits than its factorization.

63964020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066079 (or 1066077 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 63964020 is about 7997.7509338563. The cubic root of 63964020 is about 399.9250276154.

The spelling of 63964020 in words is "sixty-three million, nine hundred sixty-four thousand, twenty".