64735140 has 24 divisors (see below), whose sum is σ = 181258560. Its totient is φ = 17262688.

The previous prime is 64735123. The next prime is 64735183. The reversal of 64735140 is 4153746.

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

It is a junction number, because it is equal to n+sod(n) for n = 64735098 and 64735107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539400 + ... + 539519.

It is an arithmetic number, because the mean of its divisors is an integer number (7552440).

Almost surely, 2^64735140 is an apocalyptic number.

64735140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64735140 is an abundant number, since it is smaller than the sum of its proper divisors (116523420).

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

64735140 is a wasteful number, since it uses less digits than its factorization.

64735140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078931 (or 1078929 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 64735140 is about 8045.8150612601. The cubic root of 64735140 is about 401.5257147538.

Adding to 64735140 its reverse (4153746), we get a palindrome (68888886).

The spelling of 64735140 in words is "sixty-four million, seven hundred thirty-five thousand, one hundred forty".