3626246640 has 80 divisors (see below), whose sum is σ = 11515575456. Its totient is φ = 943411200.

The previous prime is 3626246639. The next prime is 3626246707. The reversal of 3626246640 is 466426263.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3626246640² = 26299329388222579200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174421 + ... + 194100.

Almost surely, 2^3626246640 is an apocalyptic number.

3626246640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3626246640 is an abundant number, since it is smaller than the sum of its proper divisors (7889328816).

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

3626246640 is a wasteful number, since it uses less digits than its factorization.

3626246640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368578 (or 368572 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The square root of 3626246640 is about 60218.3247857328. The cubic root of 3626246640 is about 1536.3344879729.

The spelling of 3626246640 in words is "three billion, six hundred twenty-six million, two hundred forty-six thousand, six hundred forty".