61370665 has 16 divisors (see below), whose sum is σ = 77728320. Its totient is φ = 46388160.

The previous prime is 61370653. The next prime is 61370677. The reversal of 61370665 is 56607316.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61370653) and next prime (61370677).

It is not a de Polignac number, because 61370665 - 2⁷ = 61370537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61370665.

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, 51375 + ... + 52555.

It is an arithmetic number, because the mean of its divisors is an integer number (4858020).

Almost surely, 2^61370665 is an apocalyptic number.

It is an amenable number.

61370665 is a deficient number, since it is larger than the sum of its proper divisors (16357655).

61370665 is a wasteful number, since it uses less digits than its factorization.

61370665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 61370665 is about 7833.9431322930. The cubic root of 61370665 is about 394.4454430239.

The spelling of 61370665 in words is "sixty-one million, three hundred seventy thousand, six hundred sixty-five".