64554402 has 32 divisors (see below), whose sum is σ = 141419520. Its totient is φ = 19482320.

The previous prime is 64554401. The next prime is 64554421. The reversal of 64554402 is 20445546.

It is a self number, because there is not a number n which added to its sum of digits gives 64554402.

It is not an unprimeable number, because it can be changed into a prime (64554401) 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, 15499 + ... + 19217.

It is an arithmetic number, because the mean of its divisors is an integer number (4419360).

Almost surely, 2^64554402 is an apocalyptic number.

64554402 is an abundant number, since it is smaller than the sum of its proper divisors (76865118).

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

64554402 is a wasteful number, since it uses less digits than its factorization.

64554402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 64554402 is about 8034.5754088191. The cubic root of 64554402 is about 401.1516850382.

Adding to 64554402 its reverse (20445546), we get a palindrome (84999948).

The spelling of 64554402 in words is "sixty-four million, five hundred fifty-four thousand, four hundred two".