64145750 has 32 divisors (see below), whose sum is σ = 120575520. Its totient is φ = 25552800.

The previous prime is 64145749. The next prime is 64145773. The reversal of 64145750 is 5754146.

It is a super-2 number, since 2×64145750² = 8229354486125000, which contains 22 as substring.

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, 94412 + ... + 95088.

It is an arithmetic number, because the mean of its divisors is an integer number (3767985).

Almost surely, 2^64145750 is an apocalyptic number.

64145750 is a deficient number, since it is larger than the sum of its proper divisors (56429770).

64145750 is a wasteful number, since it uses less digits than its factorization.

64145750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 64145750 is about 8009.1041946025. The cubic root of 64145750 is about 400.3034156225.

Adding to 64145750 its reverse (5754146), we get a palindrome (69899896).

The spelling of 64145750 in words is "sixty-four million, one hundred forty-five thousand, seven hundred fifty".