64601490 has 32 divisors (see below), whose sum is σ = 155344896. Its totient is φ = 17193600.

The previous prime is 64601477. The next prime is 64601491. The reversal of 64601490 is 9410646.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64601491) 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, 16239 + ... + 19821.

It is an arithmetic number, because the mean of its divisors is an integer number (4854528).

Almost surely, 2^64601490 is an apocalyptic number.

64601490 is an abundant number, since it is smaller than the sum of its proper divisors (90743406).

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

64601490 is a wasteful number, since it uses less digits than its factorization.

64601490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4194.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 64601490 is about 8037.5052099517. The cubic root of 64601490 is about 401.2491988610.

The spelling of 64601490 in words is "sixty-four million, six hundred one thousand, four hundred ninety".