67621001 has 8 divisors (see below), whose sum is σ = 78548544. Its totient is φ = 57010320.

The previous prime is 67620997. The next prime is 67621003. The reversal of 67621001 is 10012676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67621001 - 2² = 67620997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67621003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78755 + ... + 79608.

It is an arithmetic number, because the mean of its divisors is an integer number (9818568).

Almost surely, 2^67621001 is an apocalyptic number.

67621001 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

67621001 is a deficient number, since it is larger than the sum of its proper divisors (10927543).

67621001 is a wasteful number, since it uses less digits than its factorization.

67621001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158431.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 67621001 is about 8223.1989517462. The cubic root of 67621001 is about 407.4057915131.

Adding to 67621001 its reverse (10012676), we get a palindrome (77633677).

The spelling of 67621001 in words is "sixty-seven million, six hundred twenty-one thousand, one".