670902405 has 16 divisors (see below), whose sum is σ = 1073894784. Its totient is φ = 357664320.

The previous prime is 670902391. The next prime is 670902437. The reversal of 670902405 is 504209076.

It is not a de Polignac number, because 670902405 - 2¹² = 670898309 is a prime.

It is a super-2 number, since 2×670902405² = 900220074069568050, 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, 33960 + ... + 49950.

It is an arithmetic number, because the mean of its divisors is an integer number (67118424).

Almost surely, 2^670902405 is an apocalyptic number.

It is an amenable number.

670902405 is a deficient number, since it is larger than the sum of its proper divisors (402992379).

670902405 is a wasteful number, since it uses less digits than its factorization.

670902405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18796.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 670902405 is about 25901.7838188801. The cubic root of 670902405 is about 875.4266893083.

The spelling of 670902405 in words is "six hundred seventy million, nine hundred two thousand, four hundred five".