64208190 has 16 divisors (see below), whose sum is σ = 154099728. Its totient is φ = 17122176.

The previous prime is 64208189. The next prime is 64208197. The reversal of 64208190 is 9180246.

It is a super-2 number, since 2×64208190² = 8245383326152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2140273 = 64208190 / (6 + 4 + 2 + 0 + 8 + 1 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64208197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070107 + ... + 1070166.

It is an arithmetic number, because the mean of its divisors is an integer number (9631233).

Almost surely, 2^64208190 is an apocalyptic number.

64208190 is an abundant number, since it is smaller than the sum of its proper divisors (89891538).

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

64208190 is a wasteful number, since it uses less digits than its factorization.

64208190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140283.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 64208190 is about 8013.0013103705. The cubic root of 64208190 is about 400.4332597123.

The spelling of 64208190 in words is "sixty-four million, two hundred eight thousand, one hundred ninety".