61615701 has 64 divisors (see below), whose sum is σ = 112066560. Its totient is φ = 32659200.

The previous prime is 61615699. The next prime is 61615703. The reversal of 61615701 is 10751616.

It is an interprime number because it is at equal distance from previous prime (61615699) and next prime (61615703).

It is not a de Polignac number, because 61615701 - 2¹ = 61615699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61615703) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 407976 + ... + 408126.

It is an arithmetic number, because the mean of its divisors is an integer number (1751040).

Almost surely, 2^61615701 is an apocalyptic number.

It is an amenable number.

61615701 is a deficient number, since it is larger than the sum of its proper divisors (50450859).

61615701 is a wasteful number, since it uses less digits than its factorization.

61615701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 61615701 is about 7849.5669307294. The cubic root of 61615701 is about 394.9697162063.

The spelling of 61615701 in words is "sixty-one million, six hundred fifteen thousand, seven hundred one".