70673737 has 4 divisors (see below), whose sum is σ = 72583876. Its totient is φ = 68763600.

The previous prime is 70673731. The next prime is 70673741. The reversal of 70673737 is 73737607.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37161216 + 33512521 = 6096^2 + 5789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70673737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70673737.

It is not an unprimeable number, because it can be changed into a prime (70673731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955014 + ... + 955087.

It is an arithmetic number, because the mean of its divisors is an integer number (18145969).

Almost surely, 2^70673737 is an apocalyptic number.

It is an amenable number.

70673737 is a deficient number, since it is larger than the sum of its proper divisors (1910139).

70673737 is a wasteful number, since it uses less digits than its factorization.

70673737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910138.

The product of its (nonzero) digits is 129654, while the sum is 40.

The square root of 70673737 is about 8406.7673335236. The cubic root of 70673737 is about 413.4465306654.

The spelling of 70673737 in words is "seventy million, six hundred seventy-three thousand, seven hundred thirty-seven".