64431416 has 16 divisors (see below), whose sum is σ = 138067440. Its totient is φ = 27613440.

The previous prime is 64431401. The next prime is 64431427. The reversal of 64431416 is 61413446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575225 + ... + 575336.

It is an arithmetic number, because the mean of its divisors is an integer number (8629215).

Almost surely, 2^64431416 is an apocalyptic number.

It is an amenable number.

64431416 is an abundant number, since it is smaller than the sum of its proper divisors (73636024).

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

64431416 is a wasteful number, since it uses less digits than its factorization.

64431416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150574 (or 1150570 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 64431416 is about 8026.9182131127. The cubic root of 64431416 is about 400.8967713338.

The spelling of 64431416 in words is "sixty-four million, four hundred thirty-one thousand, four hundred sixteen".