61603406 has 4 divisors (see below), whose sum is σ = 92405112. Its totient is φ = 30801702.

The previous prime is 61603379. The next prime is 61603411. The reversal of 61603406 is 60430616.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15400850 + ... + 15400853.

It is an arithmetic number, because the mean of its divisors is an integer number (23101278).

Almost surely, 2^61603406 is an apocalyptic number.

61603406 is a deficient number, since it is larger than the sum of its proper divisors (30801706).

61603406 is a wasteful number, since it uses less digits than its factorization.

61603406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30801705.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 61603406 is about 7848.7837274319. The cubic root of 61603406 is about 394.9434432725.

The spelling of 61603406 in words is "sixty-one million, six hundred three thousand, four hundred six".