61450615 has 4 divisors (see below), whose sum is σ = 73740744. Its totient is φ = 49160488.

The previous prime is 61450561. The next prime is 61450633. The reversal of 61450615 is 51605416.

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

It is a cyclic number.

It is not a de Polignac number, because 61450615 - 2¹¹ = 61448567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6145057 + ... + 6145066.

It is an arithmetic number, because the mean of its divisors is an integer number (18435186).

Almost surely, 2^61450615 is an apocalyptic number.

61450615 is a deficient number, since it is larger than the sum of its proper divisors (12290129).

61450615 is a wasteful number, since it uses less digits than its factorization.

61450615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12290128.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 61450615 is about 7839.0442657253. The cubic root of 61450615 is about 394.6166552728.

The spelling of 61450615 in words is "sixty-one million, four hundred fifty thousand, six hundred fifteen".