445657653 has 16 divisors (see below), whose sum is σ = 754552960. Its totient is φ = 254661408.

The previous prime is 445657631. The next prime is 445657661. The reversal of 445657653 is 356756544.

It is not a de Polignac number, because 445657653 - 2¹³ = 445649461 is a prime.

It is a super-2 number, since 2×445657653² = 397221487354936818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445657599 and 445657608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445657613) 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, 1178800 + ... + 1179177.

It is an arithmetic number, because the mean of its divisors is an integer number (47159560).

Almost surely, 2^445657653 is an apocalyptic number.

It is an amenable number.

445657653 is a deficient number, since it is larger than the sum of its proper divisors (308895307).

445657653 is a wasteful number, since it uses less digits than its factorization.

445657653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357993 (or 2357987 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 45.

The square root of 445657653 is about 21110.6052258101. The cubic root of 445657653 is about 763.8365860531.

The spelling of 445657653 in words is "four hundred forty-five million, six hundred fifty-seven thousand, six hundred fifty-three".