61670406 has 32 divisors (see below), whose sum is σ = 147091968. Its totient is φ = 16853760.

The previous prime is 61670393. The next prime is 61670417. The reversal of 61670406 is 60407616.

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, 30955 + ... + 32886.

It is an arithmetic number, because the mean of its divisors is an integer number (4596624).

Almost surely, 2^61670406 is an apocalyptic number.

61670406 is an abundant number, since it is smaller than the sum of its proper divisors (85421562).

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

61670406 is a wasteful number, since it uses less digits than its factorization.

61670406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63876.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 61670406 is about 7853.0507447743. The cubic root of 61670406 is about 395.0865718488.

The spelling of 61670406 in words is "sixty-one million, six hundred seventy thousand, four hundred six".