64491476 has 24 divisors (see below), whose sum is σ = 133432320. Its totient is φ = 26685792.

The previous prime is 64491463. The next prime is 64491503. The reversal of 64491476 is 67419446.

It is a congruent number.

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, 38900 + ... + 40523.

It is an arithmetic number, because the mean of its divisors is an integer number (5559680).

Almost surely, 2^64491476 is an apocalyptic number.

It is an amenable number.

64491476 is an abundant number, since it is smaller than the sum of its proper divisors (68940844).

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

64491476 is a wasteful number, since it uses less digits than its factorization.

64491476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79463 (or 79461 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 64491476 is about 8030.6585035102. The cubic root of 64491476 is about 401.0212984875.

The spelling of 64491476 in words is "sixty-four million, four hundred ninety-one thousand, four hundred seventy-six".