67620473 has 4 divisors (see below), whose sum is σ = 67648128. Its totient is φ = 67592820.

The previous prime is 67620463. The next prime is 67620491. The reversal of 67620473 is 37402676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67620473 - 2¹² = 67616377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67620403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9761 + ... + 15182.

It is an arithmetic number, because the mean of its divisors is an integer number (16912032).

Almost surely, 2^67620473 is an apocalyptic number.

It is an amenable number.

67620473 is a deficient number, since it is larger than the sum of its proper divisors (27655).

67620473 is a wasteful number, since it uses less digits than its factorization.

67620473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27654.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 67620473 is about 8223.1668473891. The cubic root of 67620473 is about 407.4047311383.

The spelling of 67620473 in words is "sixty-seven million, six hundred twenty thousand, four hundred seventy-three".