64503420 has 48 divisors (see below), whose sum is σ = 181321728. Its totient is φ = 17133120.

The previous prime is 64503403. The next prime is 64503437. The reversal of 64503420 is 2430546.

It is an interprime number because it is at equal distance from previous prime (64503403) and next prime (64503437).

It is a congruent number.

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, 14277 + ... + 18243.

It is an arithmetic number, because the mean of its divisors is an integer number (3777536).

Almost surely, 2^64503420 is an apocalyptic number.

64503420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64503420 is an abundant number, since it is smaller than the sum of its proper divisors (116818308).

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

64503420 is a wasteful number, since it uses less digits than its factorization.

64503420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250 (or 4248 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 64503420 is about 8031.4021191819. The cubic root of 64503420 is about 401.0460537111.

Adding to 64503420 its reverse (2430546), we get a palindrome (66933966).

It can be divided in two parts, 6450 and 3420, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 64503420 in words is "sixty-four million, five hundred three thousand, four hundred twenty".