67621436900 has 36 divisors (see below), whose sum is σ = 146753667060. Its totient is φ = 27045782400.

The previous prime is 67621436849. The next prime is 67621436917. The reversal of 67621436900 is 963412676.

It can be written as a sum of positive squares in 6 ways, for example, as 23671668736 + 43949768164 = 153856^2 + 209642^2 .

It is a super-2 number, since 2×67621436900² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1133006 + ... + 1191194.

Almost surely, 2^67621436900 is an apocalyptic number.

It is an amenable number.

67621436900 is an abundant number, since it is smaller than the sum of its proper divisors (79132230160).

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

67621436900 is a wasteful number, since it uses less digits than its factorization.

67621436900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69824 (or 69817 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

It can be divided in two parts, 676 and 21436900, that multiplied together give a square (14491344400 = 120380²).

The spelling of 67621436900 in words is "sixty-seven billion, six hundred twenty-one million, four hundred thirty-six thousand, nine hundred".