64196145 has 80 divisors (see below), whose sum is σ = 126236880. Its totient is φ = 31021056.

The previous prime is 64196137. The next prime is 64196149. The reversal of 64196145 is 54169146.

64196145 is a `hidden beast` number, since 641 + 9 + 6 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 9199089 + 54997056 = 3033^2 + 7416^2 .

It is not a de Polignac number, because 64196145 - 2³ = 64196137 is a prime.

It is a super-2 number, since 2×64196145² = 8242290065722050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64196149) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 468517 + ... + 468653.

It is an arithmetic number, because the mean of its divisors is an integer number (1577961).

Almost surely, 2^64196145 is an apocalyptic number.

64196145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64196145 is a deficient number, since it is larger than the sum of its proper divisors (62040735).

64196145 is a wasteful number, since it uses less digits than its factorization.

64196145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 247 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 64196145 is about 8012.2496840775. The cubic root of 64196145 is about 400.4082186687.

The spelling of 64196145 in words is "sixty-four million, one hundred ninety-six thousand, one hundred forty-five".