45663890 has 16 divisors (see below), whose sum is σ = 82285632. Its totient is φ = 18245424.

The previous prime is 45663889. The next prime is 45663911. The reversal of 45663890 is 9836654.

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, 9947 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (5142852).

Almost surely, 2^45663890 is an apocalyptic number.

45663890 is a deficient number, since it is larger than the sum of its proper divisors (36621742).

45663890 is a wasteful number, since it uses less digits than its factorization.

45663890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 45663890 is about 6757.5061968155. The cubic root of 45663890 is about 357.4299730805.

It can be divided in two parts, 456 and 63890, that added together give a palindrome (64346).

The spelling of 45663890 in words is "forty-five million, six hundred sixty-three thousand, eight hundred ninety".